Scribbles again!

At least I hope these fulfill the requirements for this assignment. XD Couldn't be bothered to line the curves. They wanted to semi behave once...not going to try it with a pen yet.
Just thought of a pretty sensible question. Why is it that I'm enjoying these so much? These are only lessons--we've not gotten to practical applications of them yet. But I'm just having so much fun attempting to do these!

Planes in perspective

Points and Curves following them

...Suppose it's a good thing. Everything forbid, but I could be cursing and whining about it. No need of that at all!