After reading Carol Feldman's fine post - FIGURE ON YUPO (February 5, 2009) I decided to add one more element to the discussion: The use of charcoal pencil on Yupo. I had already tried watercolor and pencil on it but did not realize how nicely it took charcoal pencil until I was asked to do this commission from a friend's photo.
I used a General 2b and 4b pencil, a plastic eraser and a kneaded eraser. What I especially liked about charcoal on this surface is that it can hold middle tones and darks, be erased right back to the white surface, crosshatched with both the pencil and eraser and blended with a stump.
Charcoal on Yupo 12x9