Your superimposed lines are nice, good job!

In your ghosted lines, I see that there's some parts when it's less marked -perhaps it's due the tool you use- just remember to execute your stroke properly; cause that, you need to ghost enough to draw that stroke. There also some that have to strokes in one line; as I wrote before, ghost enough to draw that line with confidence.

Your ghosted planes, in my point of view, are pretty good.

Now, I'd recommend overall to ghost your ellipses as well - and remember to draw with your shoulder-, those two things are very important for drawing ellipses. I say this for all the exercise with ellipses

I shall say that your plotted and rough perspective exercises are excellent.

Also, your rotated boxes looks good.

Finally, in your organic perspective, I see that your line is a little -just a little- stiff. About your boxes, I'd say that don't worry too much -you'll sharpen that skill for sure in the 250 box challenge. I shall recognize that you manage very well the "shrinking boxes" issue

Overall -apart of the ellipses issue- you did an excellent work in my opinion.

This is just my opinion, and sorry for the bad english. Good luck in the 250 box challenge!