PhysicsNoob

Looks good. I think you're ready to move on to the 250 box challenge. You might be able to make a heavy ink fountain pen work in lieu of a fineliner. I was able to order some fineliners on Amazon as the quarantine has closed most shops.

I noticed some of the lines in the organic perspective homework look a little curved, which I've found happen to me when I accidentally use my wrist too much for them. Really focusing on ghosting a few lines intentionally at the start of an exercise can help you notice when this is happening.

Looks good, especially the rotated box exercise. I'd recommend using much smaller dots for the planned corners/lines; that way they "disappear" when you draw the actual line. Also, with super imposed lines, you should have no fraying on the start point, and only fraying as you move from there (I missed this as well the first time so did the exercise twice).

It looks like you accidentally uploaded the Rough perspective exercise twice instead of uploading the Precise (2 point) perspective exercise. Other than that, all looks good, just need the missing exercise. I think it would be worth trying a couple boxes from the organic perspective exercise again, but this time specifically trying to make 1 or 2 cubes, and 1 or 2 rectangles, to get used to how the initial line lengths vary.