Drawing backs of boxes + funky angled lines?

12:24 AM, Sunday January 23rd 2022

I understand that the back-lines of the box are where the 3 visible edges intersect, but I'm really struggling on placing them and they look like they're in the wrong place. Secondly even before drawing the backlines, I think I'm following the method pretty well but when my lines come to meet the box looks like a freaky trapezium instead of a, uh... cuboid?

I tried cleaning problem 2 up in red ink, and it seems the problem is that I'm drawing the 2nd set of lines too long and the 3rd and final set of lines connected to the Y should be going nearly almost at a right angle from the Y?

Even keeping this in mind my brain struggles to place the lines like this or think in 3D space rather than just putting lines down, particularly when I try to give a box depth. Basically just any tips on making a sexier box lol. I'm not sure if imgur links work in the Questions tab but I'll try posting my method


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12:43 AM, Sunday January 23rd 2022

Take a long time explain in detail but it looks like you're are not paying attention to vanishing points and how your lines should converge. The 4 parallel edges of the box should converge to a point in the distance. This is not happening with some of yours.

Look at the second image and the bottom right edge is clearly diverging from the edge above. I think this accounts for most of your problem.

1:26 AM, Sunday January 23rd 2022
edited at 1:39 AM, Jan 23rd 2022

Yeah the line is still ugly either way but I was mostly focusing on trying to have the lines not visibly converge at all, the way I took the video was that perfect lines should be running parallel if the VP is off the page, even if they will meet in the off-page distance due to 2D space. I don't know why honestly because looking at the graphs again they do start to converge somewhat, just not meet lol. I don't know how I messed up that line of thinking honestly

I guess that if you undershoot a line a bit it still clearly looks fine, but if you overshoot too much like I did it messes up the box completely lol. Tightening up the angle, even if the converging lines meet a bit more on the page, makes my boxes look a lot cleaner already, thank you

edited at 1:39 AM, Jan 23rd 2022
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3:53 AM, Sunday January 23rd 2022

Hey! I am working on the 250 box challenge right now, and the first thing I see when I look at the image you share is exactly what you said - you seem to be overshooting some. Remember that each line should be converging as the lines go towards the vanishing point, where your lines are diverging - which causes that trapezoidal shape. And this means both edges on each side! What you really want is a parallelogram (in the 0 perspective case) or a squished diamond (in the case with some perspective).

Based on your images, it doesn't look like you aren't adding a point to use as a guide for your lines. I found what helps me is to place a point where I think the corner of the box should be and then kind of blur my eyes or flip the paper over to see if it seems right. And definitely make sure your lines are either parallel or on the converging side of parallel.

I have added a step by step of how I draw the boxes - it isnt perfect since I am lying down and not drawing from the shoulder but it should give some idea: https://imgur.com/a/MzaUeFf

I hope this helps!

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4:48 PM, Sunday January 23rd 2022

that's what I think, your key mistake is that you don't understand - that closer lines are always longer. You have drawn the vertical line closest to you. So all other vertical lines should be shorter. You draw the top faces closest to you and the bottom ones parallel to them should be shorter because they are further away from you. For a better understanding, it may be worth using a more dramatic perspective first.

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2:28 PM, Monday January 24th 2022

I've seen spme accumulated mistakes there. Check this link:

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