3:50 PM, Sunday November 8th 2020
I can see you made quite a big progress when first starting out: the boxes became more and more convincing as you progressed. I also really like the way you handled line quality and line weight: it's mostly quite clear which faces are closer. However, I can see that you missed out on a couple of key points.
Firstly, you are not consistent with drawing convergence lines. Either they are too short, or one or two convergence points are missing. The whole point of having them is that they provide you useful feedback of what went wrong/good with drawing the edges of the box. Even if you see that the box turned out pretty bad, you should still draw them as it's the part of the learning process. When I was doing this lesson, it was the most important source of learning, as they made my mistakes more visible.
The second aspect that I want you to pay attention to is to draw less, but bigger boxes (4-6 per page). The bigger the boxes, the more it will challenge you to think about foreshortening and convergence. Although you do mention that you started drawing bigger ones later on, however I can't really see them being that bigger compared to your earlier pages.
Next Steps:
I would recommend submitting additional 2 pages (10 boxes) to practice drawing bigger boxes