I'm falling a bit behind with my PB studies this weekend, but here's one I did yesterday. It's probably my least favorite so far. I had to make a few more adjustments with the red pencil than I'd liked, and it's still not quite where it should be.
Notice the "line of action," extending in a long comma shape. I'm still trying to get the hang of this traditional animation technique, but it definitely adds dynamic to a static 2-D image.
Here's another one (this one's better), and notice that the comma-shaped line of action has been inverted.