Bit of a gimmick magic tricks if you ask me. Sure if you want to learn some tricks for shits and giggles, self-amusement, momentarily amuse your friends/strangers go ahead. But its no basis for a pick-up....so you guessed which card she picked, so what? What else you got after that?

A women is going to choose you for you, not because of any magic trick. Work on yourself dude not magic tricks....unless you fancy yourself as a kids entertainer.