Lines

I think your lines are pretty confident and well-planned. They do have slight wobbles here and there, but this can be improved with more practice making confident ghosted lines.

Ellipses

Again, your ellipses look confident. You drew through them multiple times and you did a pretty good job of maintaining the bounds, which is great! However, I did notice some small wobbles particularly towards the beginning and end of your stroke, so that might be a worthy point of focus for later on. Also, your middle-bottom funnel's minor axis doesn't cut the ellipses in half, but the rest of your funnels are much better with this.

Boxes

For the most part, your boxes look pretty good. You did a great job nailing down the Rotated Boxes, which stood out to me, and the convergences on the Rough Perspective. One thing I'd note is that you can use line weight (going over the initial strokes again), particularly for Rotated Boxes and Organic Perspective to clarify box relationships.