Hiya, Chris! I’ll be looking through your work~ Let’s go at it in order:

The superimposed lines look good, but try not to alter their trajectory. That is to say, if they run off course, continue on that course, rather than course correcting. It’s more important for your lines to be smooth, and straight, than it is for them to be accurate. The ghosted lines start off lacking in that respect, too, but improve considerably by the time you reach the ghosted planes exercise, so nice job there.

In the table of ellipses exercise, try not to draw any floating ellipses. It’s important to have a clear pass/fail criteria for our ellipses, to be able to judge them easily, and one of these is for them to hit all available bounds of the frame. Nice job on the ellipses in planes exercise. You’re prioritizing smoothness, and evenness, rather than obsessing about hitting all 4 sides of the plane- as you should be! I’ll recommend sticking to your original ellipse if you can, though. That is to say, if the first ellipse isn’t quite right, don’t try to fix it during the second and third rotation- boldly continue onto that path. Finally, the funnels are nicely done, too. I’ll recommend using a plate (or something of that sort) for the outer outer bounds, since it seemed like you had some trouble with them.

The first thing that jumps out at me in the box section is that you’ll sometimes repeat some lines. This is discouraged. Correcting your mistakes just makes them stand out more- just leave them as-is. No one is expecting perfection out of you! Outside of that, this section is quite well done! Congrats, in particular, on your rotated boxes exercise! There’s a slight issue in your organic perspective exercise, where not all of the inner angles of the box are >90 degrees, but we’ve got just the thing to fix that, haha.