Hi ! You should practice drawing all of your lines from the shoulder, I know it's especially difficult for the smaller ones, even more so when it's hatching lines and I can't say that I 100% abide by it myself but from what I understand that's what's advised. If you're really having trouble with it & are able to draw small straight lines with you wrist I guess you can probably give yourself some leeway there, but that's in no way an "official" guideline, so don't take my word for it. Maybe ask around in the discord server for some other opinions.

good work on your revisions also, your rotations already look better in the rotated boxes exercise in my opinion. good work on the overlapping boxes in the organic perspective exercise, but your boxes are still pretty uniform in size, so I'd also advise you to incorporate this exercise in your warmups and really push yourself to draw bigger boxes in the front. Remember that since they're overlapping, you don't need to be afraid of not having enough room left to draw the boxes in the back.

I'll mark this lesson as complete and let you go on to the 250 boxes challenge, best of luck to you and don't hesitate to ask if you have further questions !