Congrats on finishing the challenge! I've looked through the boxes and I must say, I really like how straight your lines are. There are a few things I want to talk about.

Box size is good but it could be a bit bigger. This next point isn't much a critique but just a refresher, since you're later boxes don't have this problem anymore but here's a link that shows where lines should be extending, just in case. Boxes don't have parallel convergences like they used to (136-160), but the number of extreme foreshortened boxes could've been upped a little. Your lines are confident and accurate, just make sure you're not repeating lines like on box 245. Your box orientation have a few issues. Boxes 171, 178, 202, 205, 209, 225, 236 have a side with an angle less than 90 degrees. Unless they sit at the horizon line, Y angles should never go below 90°. You can look at this diagram to check for that. The boxes are diverse though, which is good. Keep it up! You seem to know how boxes should be converging since back lines mess up as a byproduct of the front ones in most cases. If you wish to learn more about improving on your convergences, this image can help with that.

Overall, you've done a good job on this! There were a few fundamental issues at the beginning, but you've pulled through as you did more boxes. Once again, congrats on this! Good luck with lesson 2!!