firstly relax!!!
just let it come from within u, dont' be forceful, or she'll think ur rude, i think what would be the best flirt is to give her a smile, u noe just smile when u see, its a real turn on
secondly u must be patient, i don't know how long u've been together but if u just started don't move too fast. be confident with urself and u'll be confident with her.
there's nuthin to being a boyfriend, so don't worry, good luck with her!!!