Hello, here are my thoughts on your work:

Planes of ellipses:

I think you spread these ones out too much on your page, if you take a look at the homework example on the lesson for this exercise, the pages must be filled up, with each plane being snuggly fit against each other. This will result in more planes, which gives you more experience.

Table of ellipses, funnels:

Your ellipses could be a little more snug, and some appear to be floating a bit, take your time to ghost a bit longer, it’s sure to improve your accuracy.

Organic boxes:

your boxes all look a bit the same, although I don’t believe this counts as a mistake, a good way to combat this is to just turn your page so your boxes are at a variety of different angles.

I'd Recommend re-vising the ellpises in planes exercise, but after you've done that I'd say move on to the 250 box challenge.

Keep up the good work!