/ic/ - Artwork/Critique

Okay, so, on the left is a drawing I did on paper. On the right is one I did on my new Wacom Intuous. Obviously they are of vastly different things, but what I'm concerned about is the jitteriness of my lines on the tablet. The pencil and pen drawing I think has much straighter and more confident lines, whereas the tablet one's lines are much less straight and they also took far longer for me to draw.

Is this just part of getting used to the tablet or is there some foible to tablet drawing that is supposed to be worked around?

P.S. yes I'm aware that I'm bad at art.