Alright! Let’s look through it, then~

Starting off, your lines look good. There’s a bit too much focus on accuracy, though. It is, in fact, perfectly fine to overshoot the end point- it’s much preferred to decreasing your speed, and causing your line to become wobbly. If you do happen to stop short of it, though, leave that line as-is- don’t correct it (more on this later.)

This applies to your ellipses, too. They’re not as smooth as can be, and in the ellipses in planes exercise in particular, you’re so focused on accuracy, that the ellipses come out bumpy. It’s more important for them to be confident, and circular, than accurate.

The box section looks good. The first mistake I notice is the automatic reinforcing habit. This is actually discouraged. If a line comes out wrong, leave it. Correcting a mistake, that is, adding more ink to that area, just makes it stand out more. If you need that line to be correct, to use as a reference, or something, feel free to correct it using a red pen. On the rough perspective exercise, remember that because of the rules of perspective, the back side of the boxes is of a similar shape to the front side, but smaller. So, if the front face is, let’s say, a square, the back face cannot be a rectangle. In the organic perspective exercise, by the way, be sure to draw through your boxes. You did this in page 1, but not in page 2, for some reason.

Anyway! Though there’s a couple of hiccups, this is a solid submission, and you’re clear to move on to the next. Just be mindful of your priorities (confidence > accuracy), and learn to live with your mistakes (no automatic reinforcing.)

GL!