"Nice one S, you should try and watch an old BBC documentary of Picasso shot through a large clear glass panel, as he paints it from the other side. It's rather like having Picasso painting your TV screen from the inside... magic stuff. (Also you get to see The Man himself, as he works... a neat idea for your next speed 'PAINTING' exercise!)
BTW: Never, ever, ever use a pencil sharpener, they crack the lead/charcoal inside the pencil shaft with that twisting motion. Always use a scalpel, or a box cutter!
Just a hint from an old Art student, who couldn't afford to replace his art materials that often... Much preferred spending it on beer!"
Wiz