first of all, a lot of line the still seems wobbly and unsure, try to be more confident when drawing the line.

next is the ellipses are not bad, but try to draw through the ellipse twice, as it feels like in an attempt to draw the ellipse in one go you start to hesitate, causing the ellipse to look wobbly and uneven, but on the one where you did draw through twice, they look more even and more confident.

and last the boxes, it feels like you still don't quite have a grasp on how perspective and vanishing point works, and ended up way guessing too much, even on the rough perspective exercise.

https://drawabox.com/lesson/1/16/guessing

https://drawabox.com/lesson/1/7/foreshortening