Alright, let's see what we've got here.

Lines:

For the superimposed lines there is nothing really to report. Good job. In the ghosted lines I noticed some arching going on but nothing too bad that can't be quickly corrected in the future. Just be sure to use only your shoulder when drawing your lines.

Ellipses:

I notice that quite a few ellipses are wobbly, but other than that you did a good job keeping them within the boundaries and with minimal overlap between each other. Just remember to be more confident when drawing through your ellipses to reduce the wobble. It's never going to look perfect but that's okay. The point isn't to consciously correct while you are drawing them.

Boxes:

While the rough perspective excercise was... well, rough, you seemed to make great improvement for the rotated boxes, as far as trying to nail down the vanishing points, so that's pretty nice. In the rotated boxes exercise, while the top left boxes got kinda messy, for the most part you actually handled the rotations pretty well. Except for the bottom-rightmost box you actually got all the corner boxes to rotate nicely, which is pretty difficult. And in the organic perspective there's nothing I see here that won't get ironed out during the 250 box challenge.