Hi and congrats on completing the challenge. I'll be looking at your boxes today. So after a quick glance this appears to be very well done and I honestly don't have a ton of advice for you but I have a few things you can maybe think about to make your practice a bit more challenging.

You did a great job extending your lines back on all of your boxes correctly which is a good indicator that a student understands how to draw boxes in the first place. I can see that every once in a while like on box #9 you were having a slight divergence problem but looking through most of this I don't think it's an issue. Still take a look at this graphic as it's good to think about while drawing boxes. https://i.imgur.com/8PqQLE0.png You also did a great job improving your line quality and your ability with line weight as you worked through these pages. You seemed to struggle a little bit more with boxes with more extreme convergences so you might want to practice those a more during warmups. For the most part though your boxes are incredibly solid and while you are having occasional convergence problems that's not something that you can grind through with a ton of practice at once but something that will become less and less of an issue the longer you keep consistently drawing.

So in terms of your box practice and thinking about new challenges you might want to try rotating a box while trying to keep your proportions intact. This is a good way to really challenge your ability to think spatially. You can also try drawing boxes that aren't in 3 point perspective but are instead in 1 point or 2 point where you can't just rely on the "Y" method every time.

This was a fantastic submission though and you should be proud of the work you put in here. You clearly followed directions and checked your work and showed steady improvement as you worked through these pages. I'm going to mark this as complete and good luck with lesson 2!