tonygotcakes

Hi Ya_k_up! I'm Cakes and I'll be giving feedback on your submission. Overall this is a solid submission. Boxes have various shape and foreshortening rate. Markmaking is smooth and confident. I'm particularly impressed by the tight hatching on those starting boxes. One mistake that I find important to point out is that throughout your submission, the initial Y of some boxes has angles that are less than 90 degrees. Box 111, 115, 169, 170 (in this box two angles are less than 90 degree so we can only see two faces whereas every box in this challenge should have three faces visible) and 248 are some examples. With that being said, here are some suggestions for future warm-ups.

I suggest pushing box shape to a more extreme level. For example, you can do pizza boxes (where the height is extremely short but super long width & length), you can also vary the thickness of it from standard pizza box to almost paper thin; rod boxes (the height is long but width & length is extremely short); You can also try to rotate the box so that one plane appears as small & slim as possible (see the bottom plane of box 245 here).

I would like to direct you to this diagram which hopefully help you improve on back corners. Basically you will add the back corner of the box before the last corner (a.k.a 3rd corner). All colored lines are ghosting lines that you do to have a general feel about how the lines converge and you don't start connecting dots until you feel all 4 corners are decent enough. When I am planning out the back corner, I always keep diverging mistakes in mind, which can be illustrated in this image. I do so by comparing the relationship between the line that crosses the back corner (blue in the image) with two neighbouring lines (1 & 2 in the image). If blue diverges with either of these two, it means the back corner is in an incorrect position so I will choose another position to plot. It can be tricky because you have to take into account all three sets of converging lines and make sure the back corner you place satisfies all three. By placing the back corner before the 3rd, you basically take one set out of the equation so it is a bit more manageable. Don't be afraid to throw as many dots as possible on the page to figure out the best position for the corner.

That's everything I want to cover in this submission. There is not much feedback to give because you have done a good job overall. If you have any questions, feel free to ask and I will try my best to answer them.

Hi Times! I'm Cakes and I'll be giving feedback on your submission.

1. Lines

In Superimposed Lines, you have done a good job varying the lines as they come out from short, medium, to long and C curves as well. Don't forget to incorporate S curve into your warm-up routine for more variety. The wobbliness is to be expected because you are just starting out. With more warm-up, you will better control of your arm to produce smoother strokes. The mistake of [fraying at the start] is minimal in most strokes but most noticeable on the three horizontal rows in the second page.

The markmaking in Ghosted exercises & later on in Box section has one common issue. It is mentioned here in an exercise of Lesson 2. You appear to go over a line multiple times with thinner, fainter strokes and then use another pen that produces thicker strokes to draw on top for a clean-up pass. The resulting pass has shakiness and wobbliness to it. Another possibility that your lines look like the result of "clean-up passes" is that you might have hovered the pen too close to the paper and the page caught some ink during ghosting movement. However, I should briefly mention that the recommended size for the pen's tip should be 0.5mm or at the very least, within the range of 0.4-0.6mm as mentioned here so the thickness of your strokes is unusual to see. Nevertheless, from one dot to another, there should be only one single clean stroke. Your markmaking should be as clean as possible with no "vibrating" strokes and no shakiness/wobbliness. You can have a look at another homework submission here and pay close attention to their lines.

2. Ellipses

In Tables of Ellipses, you add some unecessary elements to ellipses. For example, in the 1st page some ellipses fall into this mistake and in the 2nd page, you treat some ellipses as a frame on their own & add more ellipses inside. Ellipses within a frame should have the same degree & orientation. In Page 2 - Column 2 - Row 3: in the right diagonal frame, ellipse's degree is not consistent as the 3rd ellipse has greater degree & rounder than the other. In the diagonal frame to the left, ellipse's orientation is not consistent as the 1st ellipse is more vertical while the other are tilted.

In Tables of Ellipses, besides the wobbliness/shakiness in markmaking of ellipses, ellipse's shape is warped and deformed as well. When ellipse's shape is smooth with no deform, you can divide it into four quarters like this and each of them shares the same curviness. Deformed ellipses are a result of trying too hard to make an ellipse touching the bound a.k.a focus too much on accuracy. You can see that mistake in the biggest ellipse of Page 2 - Column 1 - Row 3 where you bend the ellipse as hard as possible to touch the frame.

In Ellipses in Planes, you can see the same mistake about accuracy. Take the rightmost ellipse in Page 2 - Row 2 for example. By forcing it to touch all four sides, you create a noticeable protrusion to the left of the ellipse. This ellipse should look like this image instead. Comfy talks about this mistake in this video from 0:45-1:50 so make sure to rewatch it.

Be careful when space out the bound of the Funnel because if you draw one arc differently, the minor axis won't cut the funnel into two symmetrical halves. Take a look at the horizontal funnel for example, you can see that the top portion of the funnel is narrower than the bottom. With that being said, you have done a great job aligning ellipses with the minor axis. Don't forget to incorporate the second variation of this exercise where ellipse's degree (how wide/narrow an ellipse is) slowly increase as they reach either side of the funnel.

3. Boxes

I already mention the markmaking issue in Line section so I won't go into much detail here. Just put this here as a reminder.

In Rough Perspective, you should avoid drawing boxes that are too close to the vanishing point because they don't offer any learning experience. The further the box is, the harder it gets to estimate the box's convergence to the vanishing point. As a result, you are prone to make a bunch of mistakes and learn a lot from them.

You should reread the goal of Rotated Boxes exercise. In this exercise, we do not rely on the vanishing point to draw our boxes so there is no need to draw extending lines towards it. Rather, we take information from existing boxes in order to construct new boxes. Take a look at this image for example, we can draw new green & orange edge that are almost parallel to the edge of neighbouring boxes (highlighted in red). We can then draw new blue & yellow edge that slant into green & orange edge we draw in the previous step. The back plane is a smaller version of the front plane so it will follow the same drill (see this image). You should avoid using pens of different colors when doing the exercise too as your hatching should be black like other lines.

Resist the urge to comeback and correct your lines because you only have one chance to execute a line. Once you execute a line, you are done with it and move on to the next. You appear to correct your lines in Organic Perspective and also using a different colored pen when doing so. Most of your boxes are isometric where they have parallel edges instead of converging edges. This video from 6:15-7:06 explains why it's important to draw boxes with converging edges.

Hi Jinjoking! I'm Cakes and I'll be giving feedback on your submission.

1. Lines

In Superimposed Lines, you have done a good job varying the lines as they come out from short, medium, to long and C curves as well. Don't forget to incorporate S curve into your warm-up routine for more variety. For this exercise, there are two mistakes mentioned in the exercise page: 1. Wobbling 2. Fraying on both ends. Out of the two, wobbliness is to be expected because you are just starting out and you aren't in full control of what you do yet. However, you are in full control of the last mistake as fraying at the start suggest that you don't position your pen carefully before each stroke. Each row of lines should appear as if the lines shoot out from a single point. This mistake is minimized for longer strokes in your work but they are still visible if you look closely. Seeing that this is a concurring mistake in the homework, I will ask for a revision of this exercise. The homework asks for 2 pages of Superimposed but in your submission there is only one so you should provide the remaining page alongside the revision for this exercise in the reply section (see orange text at the bottom of this feedback).

Your lines are a bit wobbly in Ghosted Lines exercise but it has been reduced in the 2nd page of Ghosted Planes so you have done a decent job! However, it looks like sometimes you hover your hand/pen a bit too close to the paper while ghosting as apparent by the occasional smearing throughout the pages and in the bottom right corner of Ghosted Lines page where you go over a line the 2nd time. Gently place the pen down on the paper is enough to create plotting dots so you don't have to draw them too thick like your Ghosted Planes pages. Resist the urge to comeback and correct your lines because you only have one chance to execute a line. In the 1st page of Ghosted Planes, there are two lines you make that fall into mistake because they are too thick and chicken-scratchy. Not only does it go against the instruction to correct your line but it also makes the page look ugly as a result. The "spiky" strokes filling in the gap in both Ghosted Planes pages are unnecessary and distracting as well so you should also avoid adding random stuffs like those in the future.

2. Ellipses

In Tables of Ellipses, the markmaking of ellipses are smooth + confident and you stick to the recommended rounds for each ellipse (1 round + 1-2 extra rounds over). Ellipses within a frame also touch both top & bottom bound so good job! The shape of the ellipses looks mostly smooth but deform a bit. For example, in the 2nd page, one end of some ellipses is a bit tappered and more spiky than the other end. Ellipses within a frame should have the same orientation. In 1st page - the bottom left frame, you can see the last two ellipses tilt more horizontally than the first three.

You have done a good job in Ellipses in Planes as you keep up with the markmaking from the last ellipse exercise. Although you don't make the following mistake, I still think it's better to have a recap on it seeing how common it is for students to commit this mistake in their L1's submissions: It's tempting to try as hard as possible to force an ellipse into touching all 4 sides of the plane. By doing so you make an ellipse look deformed and sacrifice the smoothness of ellipse's shape. Take the bottom left corner plane of this page from another student for example, you can see the ellipse has a noticeable protrusion at the bottom whereas both top & bottom portion should have the same roundness. Comfy talks about this mistake in this video from 0:45-1:50 so make sure to rewatch it. With that being said, it appears you are missing another page of this exercise so be sure to provide it in the reply section below.

In Funnels exercise, you don't properly space out the bound of the funnel. As a result, the minor axis doesn't cut the funnel into two symmetrical halves. Take a look at the top left corner funnel, you can see that the bottom portion of the funnel is narrower than the top portion. The funnel below it also falls into this mistake as the left portion is narrower than the right. For the bottom right funnel, you seem to freehand the arcs and the funnel itself is missing the minor axis. Ellipses mostly align well with the minor axis but some misalign heavily, especially the ones on the furthest end of a funnel. Don't forget to incorporate the second variation of this exercise where ellipse's degree slowly increase as they reach either side of the funnel.

3. Boxes

Rough Perspective fall into the same mistake regarding mark-making that I mention previously: you go over a line multiple times. Note that if you are adding lineweight, it should follow the note mentioned here in the box challenge page (although to be fair you only learn about this later on in the box challenge so it's not a big deal to do it incorrectly at this point) & you should add it for every box for consistency. This is most apparent on the 1st page, although in the 2nd page it is reduced heavily with minor chicken-scratches. In those attempts to go over a line in the 1st page, the mark-making is wobbly, which is a big no-no in this course. It also appears you don't spend a lot of time in the planning step as you settle for the first dot that you plot. Try to plot as many dots as you can to find the most suitable dots for your lines. When you mess up a line, it's impossible to come back and correct it but when you mess up a dot, it's as easy as plotting another one so take your time in this step. This is an extreme example but you get the idea. Out of the three steps of ghosting (1. Planning 2. Ghosting 3. Executing), planning is considered the longest step and it doesn't be so without reason.

In Rotated Boxes, you have shown an understanding of the concept and so you have nailed the resulting boxes. You are missing 4 boxes at the four corners (you can have a look at the example homework) but they are not a big deal. What is a big deal however, is the concurring mistake I mention previously about mark-making: you go over a line multiple times & the wobbliness of those attempts. You should review the three levels of ghosting here and make sure every line you execute (including lineweight lines) nail the lower level before attempting higher level marks.

In Organic Perspective, it looks like you skip planning step entirely because I can't see the planning dots in the boxes. When you undershoot a line, there would still be a planning dot visible on the page because the mark doesn't quite cross it to cover up the dot. You can see in the gaps of boxes' corners, there is no trace of said dots. The planning dots serve as an anchor to guide your eyes and to pinpoint the location of your lines. Your lines come out quite wobbly in this exercise because they are missing said anchor points.

This wraps up my feedback on your submission. If you have any questions, fee free to ask under the reply section and I will try my best to answer them.

Hi Bigtoegrunk! I'm Cakes and I'll be giving feedback on your submission.

1. Lines

You did a pretty good job on Superimposed Lines as you practice a variety of length and you also avoid fraying at the start of a line. The wobbliness is to be expected as you are just starting out. With more practice, you will get much better line control. I suggest incorporating S and C curves for this exercise to practice more line variety and it will keep your mark-making skill well-rounded.

For Ghosted exercises, the lines look mostly smooth but in Ghosted Lines, sometimes you repeat a line twice. This may also result from hovering the pen too close to the paper while ghosting so you should keep it in mind. In Ghosted Planes, the planes are mostly rectangles or squares so I suggest adding more quadrangle shapes like this. The line in this exercise is a bit more wobbly and plotting dots are too thick as well. Gently placing the pen down is enough to create the plotting dot. As for wobbliness, you can perhaps compare the amount of "effort" that you spend while doing Ghosted Lines & Ghosted Planes. For example, do you spend less time ghosting a line when doing Ghosted Planes exercise compared to Ghosted Lines, the speed at which you perform a ghosting movement between each exercise, etc. Warm-up session is a good opportunity to experiment and find what "clicks" with you: ghosting at faster speed, slower speed; pause for a second/don't pause when moving from ghosting to executing; change the angle of the pen, change your grip; how close/far is the gap between the pen's tip & the page, etc.

2. Ellipses

In Tables of Ellipses, the mark-making of ellipses are smooth + confident and you stick to the recommended rounds for each ellipse (1 round + 1-2 extra rounds over). However, the shape of the ellipses is a bit warped and deform. For example, you can see in this page that some ellipses have spiky ends & some are shaped like a drop of water. Ellipses within a frame should have a consistent orientation too. In Row 5 - Column 1 - Right diagonal frame of the same page, you can see that most ellipses are tilted at an angle but the last two progressively becomes vertical. An ellipse must touch both the top & bottom of the frame as well. Ellipses in the frame to the left don't meet this criteria.

In Ellipses in Planes, it appears you focus too much on accuracy as the mark-making isn't as smooth as the previous exercise and it's apparent you try too hard to make ellipses touching all four sides, which makes their shape deformed. Take the top left plane of this page for example, the ellipse is "sagging" at the bottom whereas both top & bottom ends should have the same roundness. The same for the plane below as the ellipse has a noticeable protrusion to the right, making it look like an egg. Comfy talks about this mistake in this video from 0:45-1:50 so make sure to rewatch it.

In Funnels exercise, you don't properly space out the bound of the funnel. As you can see from the top 2 funnels, the central minor axis doesn't cut the funnel into two symmetrical halves. The left half of the 1st funnel is narrower than the right and for the 2nd funnel, there is more space to the left than to the right. The mark-making here is the most wobbly but you have done a good job aligning ellipses with the minor axis.

3. Boxes

You have done a solid job in both Plotted & Rough Perspective. However in Rough Perspective, keep in mind that colored lines don't overflow beyond the horizon but they will stop exactly at the horizon instead. You can have a look at the example homework and reread this paragraph on how extending lines should look like. It appears you don't spend a lot of time in the planning step as you settle for the first one or two dots that you plot. Try to plot as many dots as you can to find the most suitable dots for your lines. When you mess up a line, it's impossible to come back and correct it but when you mess up a dot, it's as easy as plotting another one so take your time in this step. This is an extreme example but you get the idea.

You aren't supposed to nail Rotated Boxes exercise so I won't give too much feedback on it. One thing you can pay attention is the boxes at the cross (+) section as they aren't rotating, especially the two boxes to the left & two at the bottom. The most outer boxes should have the sharpest "tapering". In Organic Perspective, it looks like you don't do planning step properly because I can't see the plotting dots in some corners. You must always carry out every step of the ghosting method (1. plotting the dots 2. ghosting 3. executing). Every step is equally as important so make sure you don't skip out on any step. Your lineweight have some mistakes as well. You can read the note about lineweight here in the box challenge page. They are important to keep in mind if you were to apply line weight in the box challenge. Two mistakes you commit regarding lineweight are: (1) go over a line multiple times (go over once is enough to create subtlety) (2) you apply lineweight inside the silhouette.

Thank you for the feedback! Really appreciate it.

Hi Dracinna! I'm Cakes and I'll be giving feedback on your submission. Overall this is a solid submission and I think you are ready to move on to the box challenge! Before you proceed, I would like point out what you did good so you can keep that up as well as mistakes & other suggestions for future warm-ups.

1. Lines

What you did good:

• In Superimposed Lines, you incorporate lines at various length from short to long. Fraying at the start of a row is a common mistake I see in this exercise so you have done a good job avoiding this!

• In both Ghosted exercises, you carefully plot out start & end point of a line before drawing it. It's easy to forget this step in Ghosted Planes, especially for the plus (+) lines of the planes.

Mistakes/Suggestions:

• You should incorporate more S curves & C curves into Superimposed Lines exercise.

• In Ghosted exercises, your lines are slightly wobbling. You should review the three levels of ghosting exercise from time to time and always prioritize smoothness over accuracy.

2. Ellipses

What you did good:

• You always stick to the recommended rounds for each ellipse (1 round + 1-2 extra rounds over). The markmaking also looks confident.

• In Table of Ellipses, you are able to keep ellipses within bounds. Ellipse's degree & tilt within a frame also consistent.

• In Funnels exercise, you properly space out the bound of the funnel so the minor axis cut the funnel into two symmetrical halves.

Mistakes/Suggestions:

• In Table of Ellipses, the shape of some ellipses isn't smooth. For example, ellipses with narrowest degree of this page have spiky ends at the top & bottom, which makes them look like a rugby ball instead.

• In Ellipses in Planes, sometimes you try too hard to make ellipses touching all four sides. This results in deformed ellipses. Take the bottom left corner plane of this page for example, you can see the ellipse has a noticeable protrusion at the bottom whereas both top & bottom portion should have the same roundness. Comfy talks about this mistake in this video from 0:45-1:50 so make sure to rewatch it. Always make sure the ellipse turn out smooth with no bumpy surface.

• In Funnels exercise, ellipses with wider degree misalign a great deal with the funnel's minor axis (see this image, ellipse's minor axis is represented in red). Ellipses with narrower degree align decently with the minor axis so in future warm-up of this exercise, I suggest focusing more ellipses with wider degree as they appear to be what you have more trouble with.

3. Boxes

What you did good:

• Your markmaking is smoother & more confident than that of Lines exercises.

• In Rough Perspective, you manage to keep width lines parallel and height lines perpendicular to the horizon. Depth lines will come later with mileage and you will have a great deal of practice in the box challenge for it.

• The right half of your Rotated Boxes "ball structure" look pretty close to the example homework. Great job!

Mistakes/Suggestions:

• You tend to undershoot your lines in Rough Perspective. I suggest going for overshooting lines instead in order to close off every gap, which gives the box a stronger silhouette. Hope this image can help illustrate my point.

• For Organic Perspective, in the second frame of this page, the first 5-6 smallest boxes appear to have the same size. You should exaggerate size difference a bit more. The first frame of the same page is a good example.

• For Organic Perspective, you should add line weight to the larger box to show better overlap. You will learn a great deal about line weight in the box challenge so be sure to incorporate it into the challenge.

Hi Rawlight! Overall the revision is really solid, although in Rough Perspective it looks like you may go over some lines more than once as the lines look a bit thicker. But as long as you are aware of the mistake, you'll slowly begin to change those habits.

I think you are ready to move on to the box challenge. Congrats and good luck on the challenge!

Although I can't offer any specific tips on the topic you mention, you can always ask for advice on the Discord server. You can post your work on #figure-drawing for gesture drawing and either #traditional-media or #digital-media depending on which medium you are going for.

Hi Elodin! Really appreciate the feedback. I'll keep it in mind for the future.

Hi Fable! Overall this is a solid submission and most of the mistakes you make can easily be fixed without much mileage so good job! In this feedback, I will mostly point out what you did good & minor mistakes so you can avoid them in the future.

1. Lines

What you did good:

• Your markmaking in all three Line exercises come out smooth & confident.

• In Superimposed Lines, you incorporate lines at various length from short to long and even curves as well.

• In Ghosted Planes, you always plot out two points before connecting them, which is a step that I often see missing in L1's submissions.

Mistakes:

• In Superimposed Lines, there is a little bit of fraying at the start of lines. It is not as severe as the website points out but in some rows of this page, you can see a few lines start a bit further in than the original starting point.

• In Ghosted Lines, your plotting dots are bigger than necessary. Touching your pen lightly on the paper is enough to create plotting dots.

2. Ellipses

What you did good:

• You always stick to the recommended rounds for each ellipse (1 round + 1-2 extra rounds over). The markmaking & shape of your ellipses are also smooth.

• In Table of Ellipses, you are able to keep ellipses within bounds. Ellipses' degree & orientation within a frame also consistent.

• In Funnels, most of your ellipses align well with the minor axis. You also incorporate the second variation of this exercise where ellipse's degree slowly increase as they reach either side of the funnel.

Mistakes:

• In Ellipses in Planes, sometimes you try too hard to make ellipses touching all four sides, which makes them deform. Take the 2nd ellipse at the bottom row of this page for example, you can see the ellipse has a noticeable protrusion at the bottom whereas both top & bottom portion should have the same roundness. Comfy talks about this mistake in this video from 0:45-1:50 so make sure to rewatch it. Another example where your ellipse deforms is in Table of Ellipses - Row 3, Column 2 - Left diagonal frame - 3rd ellipse of this page.

• In Funnels exercise, you don't properly space out the bound of the funnel. As a result, the minor axis doesn't cut the funnel into two symmetrical halves. Take a look at the top left corner funnel, you can see that the left portion of the funnel is narrower than the right portion.

3. Boxes

What you did good:

• You manage to keep up the quality of markmaking in all box exercises as all pages have confident linework.

• In Rough Perspective, width lines & height lines mostly meet their criteria, which is keeping width lines parallel and height lines perpendicular to the horizon.

• Your Rotated Boxes look pretty close to the final example on the website, which is not an easy feat to do.

• In Organic Perspective, you are able to show the depth of the scene by making furthest boxes smallest in size and slowly increasing their size as they travel (Though in the rightmost frame of this page, your boxes have consistent size so you should exaggerate the difference a bit more).

Mistakes:

• In Rough Perspective, you are missing one line for the top box in the rightmost frame of this page.

• In Rotated Boxes, the rightmost box in the cross section (+) doesn't rotate enough as extending lines of both this box & the box to the left almost overlap.

• The next point is not actually a mistake, but in Organic Perspective you can add line weight to boxes that appear in front to show overlap more clearly.

Hi Rawlight! I'm TonyGotCakes and I will be giving feedback on your L1 submission.

1. Lines

In Superimposed Lines, there are two mistakes to keep in mind. Out of the two, wobbliness is to be expected because you are just starting out and you aren't in full control of what you do yet. However, you are in full control of the last mistake as fraying at the start suggest that you don't position your pen carefully before each stroke. Each row of lines should appear as if the lines shoot out from the same point. Other than that you have done a good job varying the lines as they come out from short, medium, to long and curves as well. Don't forget to incorporate S curve into your warm-up routine as well.

Your lines are a bit wobbly in Ghosted Lines exercise but by the time you reach Ghosted Planes, the wobbliness has been reduced so good job! In addition, for each line you also plotted out two points before connecting them, which is something I often find missing in other's works. However, it looks like you hover your pen a bit too close to the paper while ghosting as apparent in the bottom planes of this page where the page caught some ink or for the top left corner plane in this page, you may have gone over a line multiple times for the left side.

2. Ellipses

For all three ellipse exercises, sometimes you draw an ellipse in more rounds than the instruction says (1 round + 1-2 extra rounds over the original one). An example of this is the 3rd row of this page. In Table of Ellipses, sometimes the shape of an ellipse is a bit warped. For example, for the bottom row - right column of the same page, the fourth ellipse has a spiky end. The fourth ellipse of the frame to the left of it is shaped like an egg where the top end is tappered. Nonetheless, you managed to keep ellipse's degree + rotation within a frame consistent so good job!

In Ellipses in Planes, some ellipses become warped because you try too hard to make an ellipse touching all 4 sides. Take the bottom left corner ellipse of this page for example, the bottom end of the ellipse is stretched to make it reach the edge. This in turn creates an egg shaped ellipse whereas both ends of an ellipse should have the same roundness instead. Comfy talks about this mistake in this video from 0:45-1:50 so make sure to rewatch it. Always keep in mind smoothness will always take priority over accuracy.

In Funnels, the minor axis does not cut the funnel into two symmetrical halves. Take a look at the bottom right corner funnel for example, if you look at the top portion of the funnel, you can see the left side is narrower than the right side. You can see the same effect take place in the funnel to the left of it. There are some misalignment for some ellipses but the majority of them align well with the minor axis. Don't forget to try out the second variation of this exercise where you increase ellipses degree as they travel to either end of a funnel as well.

3. Boxes

You did a good job for Plotted Perspective but the hatching is a bit rushed, especially for the rightmost frame where the lines don't come out as straight. In Rough Perspective, you have done a good job keeping width lines parallel and height lines perpendicular. However, in this exercise and Organic Perspective, your lines are chicken-scratchy, which is the biggest no-no in this course. Remember to apply ghosting method for every straight line you freehand in the course. If you want to add lineweight to the box, one ghosting line on top of the original line is enough. Resist the temptation to redo the lineweight when you miss it the first time. Another place where you come back to correct your lines is in Rotated Box as apparent in one box at the bottom row. In addition, you cannot add lineweight to every line that makes up a box but rather there's a certain rule to keep in mind. You can read a note about it here. What I said about lineweight can be applied to your Organic Perspective exercise. For this page - the leftmost frame, the box at the start up the the half-way point has similar size to each other whereas you should slowly increase its size instead.

That's everything I want to cover in your submission. If you have any questions, feel free to ask and I'll try my best to answer them. Good luck on your revision!