Lines start a bit wobbly, though the confidence improves over the set. Don't forget you should always prioritice confidence over accuracy. Ellipses are mostly confidence though, good job!

On boxes, you seem to be rushing your lines a bit. Work on your lines as much as you did on previous exercises. Always do your best and don't rush.

You're repeating lines, don't repeat them, no matter how wrong they are, keep going as if they were correct.

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

I recommend trying more overlaps on organic perspective. 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!

Just as a note, don't cross out lines neither. Don't correct or cross, the marks you do on the paper are final, don't try to change them.