Some thumbnail pages out of my sketchbook. I thumbnail a lot, but the amount of detail is hardly consistent. I either stop when I get a good idea of a shot, or get too interested in it, and end up using the more detailed panels to enlarge and trace onto comic paper as a starting point:
This one is a perfect example. I got the right pose I was going for, but it wasn't the right size in the panel. So I shrunk the borders, and started getting an idea about the background. Scanned, I can enlarge it to 11x17 paper scale. This sort of thing really helps to be able to take in the whole composition... something I cannot do at all drawing at the larger size.