Congrats on getting through the 250 boxes, and good call to get feedback along the way. These look great!

Your lines are confident. You varied the size, shape, divergence, and orientation of your boxes. I thought it was interesting how in a few cases, you drew sets of related boxes (e.g. 87-89, 156-158, 186-188m 216-218). I haven't seen that before in this challenge, and really liked it. Through this, one could see how a box would change as it moved through space.

If I had to nitpick, I'd say to try to make hatching not go beyond it's bounds, as it did run over or under the edges a bit. It was pretty minimal, though.

Overall, really nice work, and good luck with lesson 2!