heres a sugestion... haduken->shoyuken->that spin kick that i cant pronounce->grapple (your pick)->metsu shoyuken-> (enemy falls)-> enemy bounces up once from impact of drop)->metsu haduken right before he falls
I don't know if he does it with a tablet or computer. but on his tutorials i see a computer mouse xd. and for the smooth stick figures. a guy from hex gave me some advice. HEX : a RHG clan filled with stick fight animators. Thats what RHG is i guess . xD. just try to decrease the smoothnes. makes better lines.