Hi, your overall work is fine but you should try to be more confident with your lines. I recommend doing ghosted lines. Try to focus on confidence instead of hitting two dots perfectly. If your line starts to divert from your finishing point, let it be. This is explained 'Mistake: Wobbly lines' part of the Ghosted Lines exercise as well as throughout the whole first part of the lesson.

Also, I highly recommend doing 250 boxes challenge which will improve your understanding of 3D space and vanishing points. Your boxes can use some improvement but they are not so bad. Mines were similar to yours and after 250 boxes challenge, they improved drastically. If you don't have time for 250, you can draw at least 180 boxes in my opinion but try to do 250 :)

Have a super day