You should start off with one or two fingers at a time, and then gradually move onto 3...then 4...Once you go to 4 fingers, you want to start in the act of Ducking...get your hand into a duck formation and "Quack that in there"...(you may need to spin your hand in order to get WRIST DEEP!) After all of that goes down you want to just form into a f!st and let the FUN BEGIN!