Those are just sketches. I outline some of them onto the computer, but I'm still learning how to color. Got the Paint Tool Sai trial the other day; trying to experiment with it.
Edi: I also have the same problem with drawing on the computer. Its easier to fix and edit, but difficult to actually draw. One of those screen tablets can fix that problem.
How 2 Draw hands gud
Hands aren't easy. I figured you shouldn't focus too much on them. It'll work out well enough, but that's if I get to the hands. I focus more on the upper body. Hands aren't a big problem, but I just get lazy. What I have trouble most is with the feet, though I have trouble with everything, really.
Can't improve if I have nothing to draw, and I can't think of any ideas.