When I draw, my hand is very unsteady making any attempt to draw smooth lines suitable for more comic style artwork borderline impossible or sketching finer details a royal pain in the ass. Any tips for making my hand more steady?
To add to that, do tons of drawings without lifting your hand with pen/sharpie. Also, try not to go over your lines too much. A friend of mine was being trained like that when he was an intern at a tattoo parlor, because they aren't allowed to be jittery or fuck up. It taught him to make decisions and not flip if a mistake was made. You'll learn to work at a more sure pace instead of trying to rush too much. It'll also help with line weight.
I'll add that amateurs often worry way too much about details in drawings, to the point where they get caught up in them.
Details are usually best left until you've got all your main shapes blocked in. If you concentrate on details first, you're likely going to get drawings where the proportions and shapes are all messed up.
What Elwell said. One of my favs is Nicolas DeCrecy, whose line is shaky as hell. Then there's John Callahan, a quadruplegic cartoonist who draws with the pen in both hands. Sometimes I wonder if I should draw shakier ;-)