Heyo, hope you're having a nice day!

Imposed lines: Some of the longer lines do wobble just a tiny bit, try not to tighten up your shoulder muscles and just let your muscle memory do the work instead of hesitating and letting your brain do the work. Other than that, they all look confident and they don't fray at the beginning. The curves look great as well.

Ghosted lines: They seem to curve and wobble, and a few of them don't start on either end. Try to ghost from the dot and draw from there. Also, don't hesitate because then it'll slow down your mark and it'll look wobbly, instead you should just go with it and see how it goes. Don't go for accuracy as you want the lines to be more confident than accurate, and don't forget to rotate your page so that you can find comfortable angles to draw from.

Ghosted planes: Remember to take a picture of the planes before you jump onto the ellipsis in planes exercise so that the viewers can see how you did with the planes before hand. Other than that, they look great.

Table of ellipsis: They look great, just remember to keep the different sections of the table to a specific practice of degrees, so that different degrees of ellipsis don't get mushed with others.

Ellipsis in planes: They look great! They all fit nice and snug in the planes.

That's as far as I can crit, have a nice day!