Pencil sketch in 3" x 5" (8 x 13 cm) Moleskine sketchbook.
I am working on getting proportions in the face correct. Until now, I've been putting too much chin and lower-jaw into the face; in other words, too much room between the bottom of the nose and the bottom of the chin. However, I think I got it right on this one, at least in the sense that it looks more porportional and natural to me.
There's other stuff on Flickr.