Thor, part 0
Okay, here's the rough underneath. Let me explain. I do a rough drawing of all my pages on 11 x 17 inch copy paper. It's cheap, it's thin and it holds ink from pen and sharpies pretty well. I figure out all my anatomy and some of my lighting on that before I tape a fresh piece of bristol art board on top. The image you see here is both the rough and the art board on top, and all of if it on top of a lit lightbox.
-B