Superimposed lines: Well done. There's little to no fraying on both ends, and the variety of the lines you made really reinforced your proficiency with this exercise.

Ghosted lines: Awesome start. A bit of wobble and inaccuracy but that will get better with practice.

Ghosted Planes: Immediate step up from your ghosted lines. There's accuracy and confidence in almost of your lines. Impressive work.

Table of Ellipses: A little bit of free space, but your ellipses are smooth and tightly packed. Nice work.

Ellipses in Planes: Your ellipses touch all the edges of the planes, some miss the mark by a little but it's no big deal. Great work.

Funnels: Your funnels are, for the most part, evenly divided across the minor axis. You could use a bit more changes in the degree of your ellipses, though.

Plotted perspective: Good job!

Rough Perspective: Your line confidence took a bit of a dip, but that's to be expected with this exercise. Your boxes gradually improve in terms of roughly meeting the vanishing point, so there is improvement.

Rotated Boxes: Really well done! It's clear that you used the neighboring boxes to accurately pinpoint the locations of the others with careful planning! And your lines are confident too! Excellent.

Organic Perspective: Confident lines and good construction of your boxes without having to draw through them. Well done.

Your work is great overall and you're only going to get better from here. Keep at it!