I have been using sakura pigma micron 08, but on some pictures it looks like a blue pen for some reason.

Please ignore some additional lines in between of my exercises, I was not thinking about submitting my work for critique, so I was doing "a bit more" sometimes. I will keep that in mind in the following lessons.

I didn't really understand the purpose of squares on edges on page of rotated boxes, but I used them as a guideline for sizes of everything else on the page. (if it is a side plane of a figure than I don't understand why does it look like square, not like a trapezium? if it is the smallest sqauare of this "box" than it is kinda what I was trying to assume, but I don't see it as a part of a big sphere-like complex figure that was created during this exercise, it looks like it is just standing next to the whole thing.

In the last exercise I was doing a bit too much of dramatics foreshortening and I tried to fix it, but it made some of my boxes look wrong, because I wasn't getting my lines where they were supposed to be, because the price of mostake gets higher when you try to the shallow foreshortening.

By the way does "pool of warmups" exist on this site? Or is it what we are supposed to randomize ourselves?

I have been trying quite hard!

Thanks in advance for your feedback!