Hey there Kemaier! Really nice work getting through the whole challenge! 250 boxes is a gauntlet, and you clearly got a significant amount of mileage from this work!

Ok, so I do have a small concern starting out - your boxes are completely crowded on each page and I'm worried that this may have hindered your learning a little bit. The reason you want to give them some space is so your brain can process the correction lines and see where you might improve - when they're crowded like that, it's a lot of information to process and you're likely to miss details.

That said, you do show improvement towards the end of the challenge. Your line work is pretty strong, and your hatchmarks are thoughtfully placed, which is great to see. As for your convergences, each set of correction lines shows a good deal of consistency, with few straying lines. However, it appears you focused mainly on two point perspective, with very little rotation in your boxes or exploration into different angles. Again, I believe this may have hindered your learning. Don't be afraid to try a new angle and fail! We're looking for improvement, not perfection, so experimentation is very much welcome.

Okay, so, we link these notes at the end of every challenge as a matter of course. They're some extra notes that may help you improve further, or confirm conclusions you came to during the course of the challenge. What they go over is the angle of each line as they approach the box and how keeping an eye on this relationship could improve your convergences. Also, considering each line in relation to the lines with which it shares a vanishing point rather than the lines with which it shares a plane or a corner could do the same.

I would like for you to submit 10 more boxes, keeping these notes in mind. Give your boxes room to breathe - limiting yourself to 2 boxes per page, and try a few boxes in different perspectives.