Lines and ellipses are pretty good and confident overall. Great job!

On boxes you mainly have the issue of repeating lines. No matter how off a line is, don't repeat it, keep going as if it was correct.

You've also repeated some of the exercises. Only do the recommend page number and post. People who critique will tell you what to repeat if you need to, don't decide by yourself.

On rotated boxes, some of your boxes weren't actually rotating, careful with that, this mistake is explained here.

You're missing the exercise of rough perspective.

Follow the guidelines in general. There's an example homework and a certain format to do the exercises. In organic perspective for example, you haven't followed it.

On organic perspective don't forget to draw through your boxes. You should be able to see the boxes, even if they're covered by other boxes. You can clarify after the overlaps by adding a confident, drawn with the shoulder superimposed line on the part of the silhouette of the boxes that overlap. Perspective on them has issues but you'll work on it on the box challenge, so don't worry about it!