Good idea. And then, when you get better with making pivots. You can do, story, pivot, and pen art. Though, I'm just suggesting. Lolz. So, what's the next picture (Pen drawing) gonna be about?
Like Fallensky did, making lines here and there (Density affects shading), giving the illusion of shading.
Very carefully lightly shading with a pen. It can be done, but extremely time consuming and after 5 minutes your hand wrecks.
Funny drawings, just a bit... Simple. Practice more.
Oh yeah, stick figures aren't really fun to look at, unless you give them a lot of detail, or make lots of them. Draw something else, just so we get an idea of how good you are.
Try asking DDX for some tips!
Beware, you might not understand his art terms without a dictionary.
I'd ask good artists in your school rather than here.