First about the tables of ellipses, great work, there is a lot of improvement between the first and the second paper. In the first one there is a lot of space between the individual ellipses but in the second paper you corrected that. I think they look pretty good, maybe just try more diversity like with the planes, You can do more andgles, sizes. If you are not sure how, look around you, there will be plenty of ellipses surely.

With the ellipses in the planes, your inner circle sometimes doesn´t touch the plane at all, I think in this case, you can try doing like maybe 1 or 2 more rounds but try to connect them. Some of them are correct and look good.

There is one major problem with the funnels I see and its that your ellipses doesnt change much, yes the first one is thinner but the rest kinda looks the same size, try to do them more and more open/ wide. Also focus more on the center line and draw the rest of the ellipse depending on the center, so the ellipses can be more symmetrical.

Don´t give up, there is few things you can do better, but give it time, focus on the next tasks and everything will get better as well. Lookin forward for your next exercises.