Hi, i'll critique your homework.

Overall, you did a great job (the rotated boxes are very good).

Lines

Your lines present some wobbles (specially on rough perspective) but it shows that you're in the way to improve (I'm currently in lesson 2 and i still wobble sometimes). The other lines exercise seems nice to me. Also, we're trying to improve smoothness , confidence, no-wobbling lines before accuracy on this lesson, so don't worry about not match the mark right now. In that order, you should mark every line you're drawing (that for the ghosted planes exercise, the inner lines should be plotted).

Don't repeat lines, no matter what, stick to what you've done and keep drawing. (thicking a line is not repeating a line, btw).

ellipses

I always said this: ellipses are a tough topic, specially if you're new on drawing. Funnels are fine, and table of ellipses too (despite you should draw one ellipse to another, almost tangent, without overlapping. Mind the inner axis too.

Boxes

On plotted perspective, it seems that the closest edge to the viewer is not perpendicular to the horizon line. Keep that in mind,, also for the rough perspective (you miss a box on the page 2 of that exercise).

On rotated boxes, nice job there, but keep in mind some edge boxes are not actually rotating.

Nice job on organic perspective, your boxes actuallty look that are getting far away. but some boxes are no rotating along the mark. Don't be afraid to lineweight your boxes, you've to do it in the 250 boxes challenge.

So, with all that say, i'll mark this homework as complete. you should start the 250 box challenge, good luck with that!

Laslas.