Congratulations on completing the 250 Box Challenge!

You did really well overall and I can see a lot of overall improvement as you moved through the challenge. The construction of your boxes improved a lot as well by the end. I can also see that by the end you also do a much better job of getting your sets of parallel lines to converge more consistently towards their shared vanishing points.

While your boxes are very clean looking and well constructed, I would recommend that you try adding some weight to your boxes as shown here. This should help push your boxes even further than you already have.

Finally while your convergences do improve overall I think this diagram will help you further develop that skill as you continue through Drawabox. So, when you are looking at your sets of lines you want to be focusing only on the lines that share a vanishing point. This does not include lines that share a corner or a plane, only lines that converge towards the same vanishing point. Now when you think of those lines, including those that have not been drawn, you can think about the angles from which they leave the vanishing point. Usually the middle lines have a small angle between them, and this angle will become negligible by the time they reach the box. This can serve as a useful hint.

You did a great job overall on this challenge. Good luck with lesson 2!