When you write or draw, the muscles in your fingers, hands, wrists ... The fingers work together to direct the pencil, and the thumb acts primarily to hold the pencil in place against the forefinger.

KIM: Oh good idea Max. Oh spindles. I'm not very good at drawing teeth. I think I need help holding my pencil. MAX: Hold your ice cream. Don't crush your cone! KIM: Pinch it. So point. Pencil.