Congratulations on completing the 250 Box Challenge!

You did a really good job overall and I can see that buy the end you learned a lot. The quality of your construction and mark making really improved when I compare your first few pages to your last ones. You do a much better job of adding weight to your lines that blends more seamlessly with the previous mark and your sets of parallel lines converge more consistently towards their shared vanishing points.

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, good luck with lesson 2!