Lines: Your superimposed lines are good and you make great use of the available space there. While on the second page there is more visible fraying, it's mostly due to there being many page wide lines. You curved lines also have low relative fraying, which is good.

Your ghosted lines get very close to the end point, which is good. The problem here is that there is visible wobbling or curving in some lines.

The ghosted planes look better in regards to line quality. The extremes, while interesting to try, are more prone to errors, although your lines there tended to be very straight and on spot.

Ellipses: The table of ellipses looks good, with most of them properly contained within the frames. There are cases where the second or third pass stray more from the original, this is more noticeable on the larger ellipses.

On the planes, it's very hard to tell how the more extreme ones went. There are some ellipses with more than 3 passes as well. Other than that, most of them are well contained and manage to touch all four borders, or come very close to it, which is very good.

For the funnels, the middle line not being properly aligned makes it impossible to get all ellipses properly cut in half, but most of them are properly contained. The ones on the corners are better in that regard, as it's easier to make sure the line comes off in the center than between the curves.

Perspective: The plotted perspective is easy stuff and yours is good. Your rough perspective is very good, with lines converging close to the VP and the boxes themselves being clean for the most part. There are some where the back face is a trapeze rather than a rectangle.

Your rotated boxes are great, with the only problems being a bit of placement, as the diagonals don't give it a "round" look, and some back faces. Considering the difficulty of this exercise, you did really well there.

On the organic perspective, your lines suffered a bit and look like the ghosted lines exercise. There is significant improvement comparing the first frame to the second of the first page, although there were spots were it looked like the boxes weren't getting farther away. Overall, the exercise looks good.