Lines are pretty nice and neat, good confidence! Same with ellipses, though they get a tiny bit of wobble at times. Don't forget to focus on confidence on these too. Confidence is always more important than accuracy in these exercises, don't forget it!

Boxes are mostly good, but your quality of lines is decreasing. Don't forget to focus on your confidence even if your accuracy falls off.

You're also repeating some lines that were off, don't do that. If you got a line wrong, keep going as if it was correct.

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

On organic persepective, 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!