Hi there, Filurfelix!

I ask you to do 50 more boxes and try to improve in areas I mention below.

I needed to see 3 things in your work

Drawing through your forms

Checking our convergences

Line weight

You did draw through all of your forms. That's good!

But other 2 are the problem here.

My main concern with your work is convergence. There are quite a few boxes where you didn't extend your checking lines in right direction. Examples are 4, 5, 10, 11, 12, 14, 15, 16, 17, 66, 67. Though I didn't try to find all of incorrect ones. Your last (200-250 for sure) boxes do not have such a problem.

Other problem is line weight. Things like too much line weight, weight in internal lines, excessive corrections/drawing over incorrect line. Examples: 16, 19, 20, 25, 235, 239, 247, 250.

And minor suggestion don't lean so much on dramatic foreshortening . In actual drawings you'll need shallow more often (by it's definition).

Please check orginal challenge notes that I pinned above.