Hi Ksilenomen! Hopefully my critique can be of some help to you.

I know it's fine to use a ballpoint pen starting out, but I really do recommend using fine liner/felt tip going forward. It makes a difference. And it makes a difference in how much you'll learn and be able to take away from these lessons, so not using the recommended materials can be considered a bit of a waste of your own time. Just a reminder, now onto the real stuff:

Lines

For the most part the superimposed lines look confident, but make sure you line up your starting point so you don't get "fraying at both ends". I see some wobble, and arching in the superimposed lines, but that looks a lot better in the ghosted lines. Same for your ghosted planes, overall confident lines but a bit of wobble and arching here and there.

Ellipses

Good job! You're drawing through them 2-3 times and no big problems of shakiness. The major issues I can see concern alignment/angle. Practice this by trying to keep the angle of all ellipses in a panel of your table consistent.

For the funnels: make sure that ellipses are properly aligned with the minor axis going straight through, cutting them in two equal halves, with the major axis perpendicular.

Some of the ellipses in planes seem shaky though, remember: confidence > accuracy.

Boxes

Rotated boxes: you did too many :) There should be 5 horizontally and 5 vertically. Not a big problem but always try to make a point out of following the instructions exactly. What I do think is a problem here is that you're making them quite shallow and in the extreme corners boxes start facing away from us.

In the rough perspective your line start to look a bit less confident, but you seem to follow through and not re-draw lines that much, good job! About re-drawing lines to fix them: don't. It doesn't fix a line, it only makes for a messy drawing. What we want is a clear drawing, where we can see our own mistakes.

Overall your lines do look better in the ghosted lines and planes than in for example the organic perspective or rough perspective. This is not that odd since when you start drawing boxes you're not drawing lines. Try to separate these concerns. Every line must go through the three stages:

1. Planning (making dots, deciding where the line should be drawn),

2. Ghosting (going through the motion, preparing yourself physically) and

3. Executing (actually making the planned and prepared pen stroke).

Your only place to decide wheter the line will be confident or not is in step 1 and 2. As soon as the pen hits the paper in step three all you can do is follow through on that trajectory and be confident you made the proper preparations. No backsies!

All in all: Great job!