sad_persian_cat

Good to know, just keep on it, and submit again

Hi, sorry for the late answer. Looks much better, keep practicing that exercise until you can point the boxes to a single vp the best you can.

Hi!, I'm very sorry for the late answer. Now this seems much better, now I recommend you to tackle the 250 box challenge and advance to the 2nd lesson!

Hi, sorry for the late response. Those lines doesn't look too bad... but I can see you keep arching them a bit. Have you been practicing these days?

Hi, I have some insights for you here:

• Superimposed Lines:

  These look very good, but maybe you could vary the length of the lines a bit, and do from short lines of like 2 inches to lines as long as the width of the page, that will give you more control over your shoulder. I can see some wobbliness but its not very pronunciated, the more you practice, the more you get confident and precise. Same with your curves, you can do them a bit more long and diverse.

  Remember to keep in line with the required number of pages per exercise, wasn't necessary to do 3 pages of Superimposed Lines.

• Planes:

  Very good work here too. Aside of the usual woobliness, my only objection is your attempts to "fix" your lines by redrawing then over the faulty ones: https://prnt.sc/w21796 Remember that the whole idea of use ink is to leave your errors in the past, not "erase them", so ink makes it impossible to fix errors like a pencil and an eraser... just keep advancing and leave the errors in your memory, so you learn from them and not get trapped by them.

• Ghosted Lines:

  What happened here? seems like you've missed this exercise: https://drawabox.com/lesson/1/ghostedlines

• Ellipses:

  Your ellipses here are a bit woobly, but one of the main problems here is that you're redrawing them too much, I can see more than 3 loops here: https://prnt.sc/w21b27 Remember that the ideal is 2 loops, with a maximun of 3. To combat the woobliness, the secret is in ghosting, you ghost your ellipses using your shoulder enough to get a curvy and natural looking ellipses after you draw the mark in the paper.

  I can see a bit of "quantitiy > quality" approach here: https://prnt.sc/w21ccb The exercise is not about filling every little space with micro-ellipses, its about to train your muscle memory for do elliptical marks naturally, so the better approach here is to do a fair number of ellipses without fall into excess.

• Ellipses in Planes:

  The problem in the ellipses is very much the same of the past exercise, so apply the same fixes here too the next time. Now the biggie here is in your planes. Strangely, you done a great variety of diverse planes in the earlier submission, so why do just one kind of plane here and "copy" it until the paper gets full? The better way to practice with your ellipses here is by having a great diversity of planes that vary in size and form, so you're forced to put ellipses that will vary in form and size too, giving you more experience, muscle memory and refinement of your instinct.

• Funnels:

  Good job here, these look great, just apply the fix of ellipses and thats enough. Y've done a good number of these and the look enoughly precise if we speak about the alligment of the minor axis of every ellipse with the "Y" axis of the funnel.

• Plotted Perspective:

  Good job here too. I see a good number and varity of boxes. My only point is that you seems to mismatch some lines a bit: https://prnt.sc/w21kr4 but its not too problematic, just be a bit more careful.

• Rough Perspective:

  This is a good attempt, but please don't reconstruct your boxes: https://prnt.sc/w21n69 as with happened in your planes, you are redrawing lines too to give the feel of a more "boxy" box but it doesn't work, you need to have a bit of "blind faith" in your ghosting technique and draw, no matter what happens, you go to the next line, you don't back to fix ink, its a bit like to try to fix a broken eggshell. Another problem when you try to use these "fixed" boxes to finish the exercise is that you don't know which side-line to use to point them to the VPs: https://prnt.sc/w21qla So, the point of the exercise gets messed up because you now will have this "range of choice" between all the redrawn lines to choose one that points to the VP better than others... I recommend to do recurrent warmups with this exercise.

• Rotated Boxes:

  Seems like you're getting the idea of rotation here correctly, and you don't fell in the classic error of make the boxes more small than to rotate them, good job!! but the problem here is that the boxes are too close to each one. This what happens, if you draw a faulty box, the next one that you draw close to the faulty one will get somewhat deformed, becoming a faulty one too, for example, see how the green box is deforming each other boxes that were draw close to it: https://prnt.sc/w21xjl You will be much better in boxes after you finsh the 250 box challenge, but for now you can practice this exercise in your warmups, drawing just a quadrant of the whole thing.

  Double check your exercise in order to seek for unfinished boxes too: https://prnt.sc/w220i8

• Organic Perspective:

  Very good, but you can be a bit more careful drawing your boxes. Apply the advice of not redrawing and refine your ghosting method so you will be more precise, You can use this one too as a warmup, just draw a segment of the whole grid whan you choose it.

  Thats all, hope it helps!

Hi UNCLOUDED, I would like to give you some insights that you could find helpful in this lesson:

• Superimpossed Lines:

  Good job!!, these look very good, but I can see that your lines arch a bit here, maybe you can fix that by first drawing a line with pencil (very slightly to not to carve the paper) and use it to superimpose the rest of the lines, so you will have a straight guide for every line done with ink. Can do the same with the curves, but this is a pretty good start.

• Ghosted Lines:

  These looks good, but I fear that you are being a bit shy when you draw these lines. I would like to see more lines and of different size, ones of a few inches and another as long as the width of the entire paper. Don't fear to overlap them in order to draw a diversity of angles and sizes, and of course remember to rotate your paper.

• Ellipses:

  These looks good too, but I see that you are getting some angulous turns in your ellipses. Remember that the key here is ghosting, so, if necesary, ghost enoughly to get the feel of a natural ellipse in your arm (thats how muscle memory works), once you do the mark, you will note how your ellipses come natural and curvy.

  Don't get too worry about filling every little space with tiny ellipses like in this screenshoot: https://prnt.sc/w135jv that will make you pressured for put a lot of ellipses that very probably will look plane and unnatural, because you will not have the sufficient space to draw them well.

• Planes / Ellipses in Planes:

  These are very good, but keep an eye on how many times you re-draw over the same ellipese. Remember that ideally, you should do 2 loops, but 3 are the maximum.

  The woobliness of your curves here will get aliviated when you get confident by ghosting properly your ellipses.

• Planes:

  My only objection here is the alligment of the minor axis with the main axis line of the funnel, see the difference here: https://prnt.sc/w139s3 As you can see, the minnor axis of your ellipses should be alligned to the "Y" axis of your funnel, as the mayor axis of the ellipses remain perpendicular.

  Your can try this too: https://drawabox.com/lesson/1/13/step3 in order to make your ellipses more "3Dish", by making every adjacent ellipse to an earlier one more wide, but entirely optional after all.

• Plotted Perspective:

  Looks good but evidently you got shy or maybe even tired of the exercise after a while, try to rest a bit if you start to get bored of these exercises because doing them in that state could hinder your performance. Try to draw more boxes of different sizes and forms the next time.

• Rough Perspective:

  Here we have some serious problems. First, you aren't finishing the construction of the boxes: https://prnt.sc/w13egp Second, you missed the point of the exercise completely, because you are pointing actually the vetices of the boxes to the VPs, not the sides as it should be. This is what you shoud have done: https://prnt.sc/w13g73 Finally, Your lines don't converge to the vp of the horizon but get lost in it each one on a differenth "path", so I seriously recommend to re-study the perspective theory on the article and redo this exercise, not to perfection of course, but only one more time, after you understood the rules of it.

• Rotated Boxes:

  Good job here, its a pretty good attempt!!, but you have the classic error of a beginner here, which is that you aren't rotating your boxes, but making them smaller: https://drawabox.com/lesson/1/16/notrotating You need to keep in mind that a box is rotated when the VPs rest in the horizon moves from their original position, maintaining the distance between them: https://drawabox.com/lesson/1/16/rotation That is how you rotate a box without deforming it, maybe you should do warmups of this one recurrently.

  This is another point that deserves attention, these boxes aren't cubes but "headless pyramids": https://drawabox.com/lesson/1/16/step4 that is how they fit toghether to give that appearence of a sphere made with boxes, by alligning them each other.

• Organic Perspective:

  Looks good... but its kinda the same point of plotted perspective... you certainly aren't putting your max effort on these... Rememeber the motto of Draw a Box: At the Best of your Current Hability, so if you are getting tired of the exercise, just rest for some minutes and then go back to it with renewed energy.

  You can try to vary the size and forms of boxes here too, in order to force yourself to draw these boxes in different angles (remember to rotate your paper as you draw in other angles than the usuals) so you get more and more experienced in this exercise.

  Remember that you can overlap your boxes a bit, like in this example: https://prnt.sc/w13ov3 so your boxes will look more natural and "cinematic", like as they arecoming in a parade from the center of the galaxy to where you are :D

  A note about Warmups: for every exercise you correctly have finished, use them as a warmup: chose one or two of them and do them for no more than 15 or even 20 minutes... and change them everyday. For complex exercises like the Rotated Boxes or the Rough Perspective, you can do just a quadrant, like this: https://d15v304a6xpq4b.cloudfront.net/lesson_images/71381f82.jpg or just a segment of the grid of Rough Perspective.

  Thats all, hope it helps!!

Hi PIRATOMOSLY0, I would like to give you some insights that maybe you could find helpful.

• Superimpossed Lines:

  First of all, I seriously recommend you to work in print paper, not in a lined notebook, because you could be really tempted to use the lines of the notebook as a guide. Second, I'm not sure if you were following the instructions properly in the article... I see a very busy result in this sheet, I can't understand why you put ellipses done in ink between randomly lines done in what seems to be pencil. The objective of the exercise is very straight forward: Draw a set of lines using your shoulder in order to train it, superimposing them, ideally doing 5 or maybe 8 of superimposed repetitions, so, your homework should look like this: https://d15v304a6xpq4b.cloudfront.net/lesson_images/152f6270.jpg

• Ghosted lines:

  We have the same problems of the first exercise here too, I seriously recommend you to keep in line with the instructions of the article, they're there for guide your and help you, but that only will happen if you follow the rules. Try to do these in printed paper, don't do anyhting more than the ghosted lines, so you could concentrate only in doing a straight line between those 2 points after you've ghosted properly, and finally don't use the same sheet of the exercise for more stuff like ellipses or for test your pen or practice another thing that don't belong to the Draw a Box articles.

• Planes and Ellipses in Planes:

  While this is certainly a much better achieved result than your early two submissions, I can see some problems in your work here too. I can see that you rush when you draw your ellipses and you're more worried about "fiting" them in the planes than to draw those ellipses confidently. The result is that angular look when there should be curves. The fix to this is to properly ghost your ellipses using our shoulder inside the plane enough times before draw it, so you will optain more curvy and naturally looking ellipses. Try to not do more than 3 loops of the ellipse, ideally, 2 are enough.

  The planes look good, but maybe you can do a better use of the paper by drawing a variety of planes, ones bigger than others and varying more the angles, that will force you to draw a variety of ellipeses too.

• Ellipses:

  As I've noticed you about the angular look and the plane sides of your ellipses in the earlier submission, here you could apply the same corrections in your ellipses to combat those angulous turns and plane sides. Maybe you could use a reference like this: https://d15v304a6xpq4b.cloudfront.net/lesson_images/cf2c3057.jpg so you can keep in mind the importance of the minor axis of the ellipses when you draw them.

• Funnels:

  The first problem here is that you shouldn't draw the two big curves that forms the exterior of the funnel by hand. Use a ruler for the axis and maybe a transposer or even a dish or a CD to draw the exterior lines. Second, try to keep your sheet more clean and ordered, Drawing a bunch of funnels on every little space will make it more difficult to fill them with ellipses, so they will look badly placed or deformed. Finally, as you can guess, you need to apply the corrctions of ellipses here too.

• Plotted Perspective:

  Aside of been done in a math notebook, these look pretty good. My only objection is that you seems to redraw a bit in some places to correct the boxes. Don't do that, once you're done with a line, there is no way back because ink is definitive, you only need to accept that you failed in that line and move on, thats the core philosophy of Draw a Box. Lastly, you seems to have a bit of a lack of care or confidence when you draw the lines in the sides of your boxes. Try to draw them with the same confidence and precision of a ghosted line.

• Rough Perspective.

  Here we have a big problem: https://prnt.sc/vyj9s0 . You're reconstructing your boxes, redrawing them to make them look more "boxy". Thats incorrect, once you draw a line, you go to draw another, you don't back to "correct" them because you can't fix ink. What you can only do is to trust in your ghosting and draw that line, keeping in mind the instructions of the articles. Second, you have a lack of confidence here too, basically the same problem of your earlier submissions originated by not ghosting properly before draw a line, so you "autocorrect" the line, making it to look woobly. This is a hard exercise, so I recommend you to do warmups with it.

• Rotatted Boxes.

  You done a good job here but please don't use the same paper for more than one exercise or for test your pencil or warmpus, its distracting and you lose concentration in what you should be doing!!

  I can see that, in the front of your boxes, you rotate them, but not at the backside: https://prnt.sc/vyjg48 so the back looks more like you've enlarged them and make them smaller, like this: https://d15v304a6xpq4b.cloudfront.net/lesson_images/d73eea49.jpg

  You need to remember that, these aren't really "boxes" but "headless pyramids" so they fit each one side by side to make a "sphere" of rotated boxes: https://d15v304a6xpq4b.cloudfront.net/lesson_images/12416ea8.jpg then, you need to keep on mind that, as a box is made of 3 VPs and two of them are resing in the horizon, those VPs rotate move in the horizon maintaining their distance: https://drawabox.com/lesson/1/16/rotation

  I can see your boxes are incomplete too https://prnt.sc/vyjkp0 You should complete the whole thing, it doesn't matter that one or 2 boxes could look misplaced, You will get a lot better when you're done with the 250 boxes challenge.

• Organic Perspective:

  Good job here!! this looks good, the only points I have here are about the redrawing of your boxes and the lack of confidence in your lines. But I hoe you do the necessary corrections and apply them in every exercise as you do your warmups.

  Note: I recommend you to do warmups of the ellipses in planes, rotated boxes and organic perspective. You could do those by doing just one quadrant of the rotated boxes like this: https://d15v304a6xpq4b.cloudfront.net/lesson_images/71381f82.jpg and just one segment of the rough perspective.

  Thats all, hope it helps!

1 - Superimposed Lines:

I see a good job here, you have a straight line with relatively low fraying. My advice here could be to practice more this kind of exercise by enlarging every next set of superimposed lines consecutively until you reach the length of the paper. You could vary the form and length of the curves too, in order to get your arm accustomed to those kind of traces. Your lines have are a bit wobbly, but that will get better the more you use this exercise as a warm-up.

2 - Ghosted Lines:

The principal problem here is your lack of confidence in your traces. This tells to me that you aren't ghosting enough or you are doing it in a ineffective way, like moving your arm from the start point to the end point and vice-versa equally, like a pendulum, that messes up your muscle memory. What you need to do here is to place two visible points, a start-point and an end-point, then place your hand holding your pencil over the start-point and then confidently do an "imaginary" trace to the end-point, hovering your pencil all the way from start to end, as you will do with a real line, with the only difference of being touching the paper with the pencil. Maybe you need to review the material on ghosted lines in the main site again in order to get the gist of it.

You could vary the size and the angle of these lines a bit too, by rotating the paper, so you draw the same line in different lengths and angles. Don't be afraid of overlap them too, so you can practice very long lines, no matter they are intercepting each other.

3 - Ghosted Planes

Good job here too, there is little to say about your lines, because the errors here are the same from the other two exercises. You need to practice more your ghosting in order to get more straight and confident lines. Again you could vary a bit more those planes, so you can practice a more diverse kind of quadrilaterals, by drawing their corners with different angles and lengths of lines.

4 - Ellipses:

The main problem here is your wobbly line when you draw your ellipses. When you lack the muscle memory to draw ellipses, your brain tries to do some "auto-correct" the line, making you do these weird turns when you draw your curves. Something that could help here is to have an example of a drawn ellipse (like the ones in the main site) before you ghost the from of said ellipse, so you are mindful of the form of an ellipse and his minor axis. Try to ghost them until your shoulder seems to "get" the curvy form of the ellipse (maybe 5 times), then draw the line, and don't do more than 3 overlapping loops (2 is the ideal). The ghosting will help you to combat that "rectangular" look of your ellipses, made by the "plane sides" by narrow turns.

I don't recommend to fit every blank space with ellipses, that makes you to deform every new ellipse drawn to fill the space leaved by another drawn earlier. Its highly difficult (and by the way, not the objective of this exercise) to calculate the perfect number of ellipses for each segment (unless you use a rule and a calculator, and again, its not the objective), so just be committed to make your ellipses look as curvy and natural as possible, it doesn't matter that you leave a bit of a black space here and there.

5 - Funnels

You almost got this one, but the problems here are the same of the ellipses exercise. Again, you aren't confidently drawing those ellipses, so your mind tries to micro-manage your arm, assaulting your muscle memory and messing up your curves. You need to be mindful of the minor axis of every ellipse you draw, so they align with the "Y Axis" of the Funnel. I recommend to review the theory of funnels in the main site again, just the video.

6 - Ellipses in Planes.

As you can guess, the same problems in the planes and ellipses exercise applies here too. On the other side, your ellipses here starting to look way better than in the other two exercises. This is one I seriously recommend to choose for warm-ups as much as you can, because you can practice ellipses, ghosted lines and planes in 15 minutes before draw. Try to do a better use of the paper here too. Draw a diverse group of quadrilaterals, not only some small and other really big, that will force to yo draw a variety of ellipses: big, small, large, short, etc...

7 - Plotted Perspective.

Good job here. This is a very straightforward exercises, so there is little to say. My recommendation here is just to vary the size and form of your boxes a bit, maybe the position too. The idea is to be familiar with a diverse kind of boxes.

8 - Rough Perspective.

Maybe you need to review the theory of vanishing points (the so-called VPs) and perspective here. I can see that you fail to construct your boxes in one-point perspective because the lines of the sides of your boxes aren't converging to the VP (even knowing that the very probably they wouldn't, because the inherent difficulty of this exercise). Instead, they are diverging. In some cases, each one to their own way, showing that the box is badly constructed in a way that reflects that you need to review the theory of perspective and boxes exhaustively.

In other instances, you aren't projecting your red lines using the lines from the sides of your boxes but weirdly the vertices. I guess you noticed that, using the sides of your boxes to project it to the VP (as it should be) you will never reach it, because they are erroneously constructed, and the lines will be projecting to the horizon, again, on their own ways. What you done here is plainly shying away from your mistakes, careful with that!!. Draw a Box is about trial, error and advance. By shying away from your mistakes like you done here, you not only fail completely this, but the entire point of any lesson.

Again, my best recommendation here is to thoroughly re-study the whole perspective and boxes theory, and redo this exercise completely.

9 - Rotated Boxes:

Taking for granted the inherent difficulty of this exercise, this was a good try!. You have here a classic problem that many beginners have, and that is, that you are making your boxes smaller instead of rotating them, here is an example of what is happening in your draw: https://d15v304a6xpq4b.cloudfront.net/lesson_images/d73eea49.jpg Remember that, if a boxes is being rotated, then 2 of their VPs, the ones that are "touching the horizon", moves along the line of the horizon, conserving the distance between them. Other ways, the box will be deformed. Go here to see this point on an animated example: https://drawabox.com/lesson/1/16/rotation So ideally, when you rotate your boxes properly, should look like this: 

https://d15v304a6xpq4b.cloudfront.net/lesson_images/4018ab0f.jpg

Don't make your boxes too close each other, as you draw every box related every ones to each other, if you draw a bad box, this one will deform the ones adjacent to it, and so the others to even others. For example, in the first "mid" level of this sphere of boxes, as you badly rotate the first row, and the adjacent boxes to the central one get smaller instead of rotated, as you draw a box in the upper or lower level so close to this badly drawn box, you will feel "subconsciously obliged" to correspond to this older box with the form of the new box you are drawing right now in another level, hence, deforming it because his "closer parent" is deformed. You can combat this problem by distancing the boxes a bit, like in this example: https://d15v304a6xpq4b.cloudfront.net/lesson_images/5f4fef59.jpg See how there is a space of like, relatively speaking, a half centimetre. So its more difficult to accidentally deform a new box by subconsciously (and actually, physically) trying to draw a new box familiar to an adjacently older box.

You have a problem of disorder here too, caused by badly rotated and positioned boxes, like in this example: https://d15v304a6xpq4b.cloudfront.net/lesson_images/9a16c189.jpg This problem, and your rotation problems will get much better when you finish with the 250 box challenge, but for practice, you could do some warm-ups by drawing only one quadrant of the sphere, so you will be getting expertise bit by bit.

10 - Organic Perspective:

The main problem here is that, in many instances, you draw the same box in many places, just a bit smaller or a bit bigger. This could reflect that you are maybe getting a bit tired of the Draw a Box exercises. Maybe, if you were grinding a bunch of exercises the same day you made this one, you were needing a rest, but you didn't, so you made this one "as it comes". On the other side, if you done this unconsciously (or even on purpose), then you are missing the point a bit. The whole idea is to draw a diverse group of boxes with different forms and sizes, but not randomly. The gist is in draw the smallest box you can draw in the starting point on the curve you drew and the biggest one at the end, so you can get this feeling of a "train" of boxes so long that seems to be coming from far away. Fox example, check this: https://d15v304a6xpq4b.cloudfront.net/lesson_images/598a86fb.jpg You can see variations on the position and sizes of boxes as every one is bigger than the last ones.

The other problems are inherited from a lack of understanding on box construction and perspective, and lines done without confidence. So, I recommend you do more warm-ups on your ghosted lines and one segment of these organic boxes in order to master it little by little.

That's all, hope it helps!! :)

anytime!! :)

Hi VC21223, I'll try to offer you my humble advice on lesson 1, so you could use this critique to review your work and progressing.

1 - Superimposed Lines:

These looks good, you have a straight hand and you are capable of draw long lines without much "derailing", but I can see that after you draw your first line, the next ones seem to go their own way just at the start and go up or down, then straight to the end point. Before draw your lines, try to be mindful of your starting and ending points, then draw your line. You can achieve that by using your muscle memory, just apply a bit of ghosting technique to it to get less and less fraying, like ghosting 3 times before draw. Also, I recommend to draw more long than short lines, because it has little sense to back to drawing short lines after you've practiced long superimposed lines. You could do this by enlarging every set of superimposed lines you draw, until you met the same length of the paper, preferably in the horizontal way.

2 - Ghosted Lines.

These aren't bad, but I would like to see a better use of the paper. You can draw a bunch of lines in any direction, you only need to rotate the paper in order to draw with the same angle, and don't fear about overlapping them, what matters is that you draw 2 points, the starting and the ending point, then ghost a short number of times (ideally 3 times) and then draw your line confidently, leaving all the work to your muscle memory.

Another advice could be to vary the length of your lines too, from short lines to lines as long as the size of the paper.

3 - Ellipses:

Seems like you're applying the theory correctly here, but the failure I can see is more in your confidence when you draw. Your ellipses looks very wobbly, so I recommend to ghost a longer time before touch the paper with your pen, In that way, your muscle memory will do the work  from your shoulder. You can use a visual aid to remember you how an ellipse look and get the "feel" of it, so you'll start to not to draw "plane" sides and "pointy" turns in your ellipses, which give then that incorrect rectangular feeling when you see them.

4 - Ellipses in Planes:

These look very good! congratulations!! But seems like you're not applying the theory fully here. I can see that in some instances, you don't draw all the points necessary to draw the plane and the insider lines, resulting in wobbly, broken and/or unfinished lines, so careful with that.

The ellipses inside looks very good but in a few instances I can see that you're more worry about hitting the points marked by the inner lines of the planes with your ellipse than drawing a natural and curvy ellipses. This can happen by accident, but you remember that the ghosting technique is the key here, so, after you ghost using your shoulder, doing an elliptical movement for maybe 3 to 5 times you will see how your entire arm draw a more curvy ellipse almost by instinct. That is how muscle memory works.

5 - Funnels:

The corrections here are basically the same of the earlier exercise, so again, watch out with those pointy turns and plane sides on your ellipses.

Don't draw the two curves of the body of the funnel by hand!, use a protractor or something circular as a dish or a compact disc, so they will not deform the ellipses you will draw inside.

You could apply a nice additional step here which consist on give each ellipse that follows an earlier one a wider minor axis, so you get a look more "3D" like in this example: https://d15v304a6xpq4b.cloudfront.net/lesson_images/26427b90.jpg

6 - Rough Perspective:

The most fundamental error here is one that was warned in the theory article in the main site which is that some of your lines of the front or the back side of your boxes aren't neither perpendicular or parallel to the horizon, but oblique, resulting in deformed boxes. Watch out for those, remember that, after constructing your box, its lines will be used to trace those guide lines that ideally should point to the VP of the box (the exercise is inherently difficult, so obviously they will not in your first attempts, but a will get better the more you practice these as a warm-up).

There is a problem of wobbly lines here too, which can be tackled with ghosting and drawing with confidence.

7 - Rotated Boxes:

Being by nature a very difficult exercise, this one resulted very good!, but the most notable error here is the disorder in the upper and lower boxes here, remember that the boxes must rotate and align each other, to not look like this: https://d15v304a6xpq4b.cloudfront.net/lesson_images/9a16c189.jpg So, remember that when you rotate your boxes, the VPs of them moves, hence their sides turn their orientation and conserve their form because the VPs maintain the distance between them, no matter were they move, otherwise will not be a box anymore.

The rest of the problems you can tackle right now are in the wobbly lines and the theory behind a box, but you will get much better on boxes when you're done with the 250 box challenge.

8 - Organic Perspective.

Bit of the same points in your rotated boxes and Superimposed Lines. If the construction of your boxes fails to met the 3 VPs that it requires in space, the will look deformed, But, after you grind the box theory with the 25 box challenge you will get better at it. You could keep practicing the "Y" technique for construction a box in your warm-ups on this exercise: 

https://d15v304a6xpq4b.cloudfront.net/lesson_images/7e325b33.jpg

https://d15v304a6xpq4b.cloudfront.net/lesson_images/40c53985.jpg

https://d15v304a6xpq4b.cloudfront.net/lesson_images/b6b205ea.jpg

You could work a bit in the size of your boxes drawing the very small the most "far" ones. The gist about this exercise is to give a feel of "far" and "close" distances, using perspective in an "organic" way (without plotting and with boxes drawn in any way possible) so the whole thing as this "outer space" feel of objects coming from very far to very close.

9 - Plotter Perspective:

Almost perfect, the only lacks here were aesthetic ones, like the filling of the sides of the boxes, and minor errors during the construction of a couple of boxes, but overall good.

All in all, a solid work, congratulations!!