I find pencil roughs the quickest way to develop my ideas. I’ve got a wonderful program, Manga Studio, which can easily handle this process but pencil, eraser and the occasional spot of Tipp-Ex correction fluid makes for a more hands on, tactile way of working.
Referring back to the script, I’m going through the basic outline of my first storyboard-style roughs, trying to add drama, clarity and a more interesting layout.