I’m kinda new to the Quen bangwagon, but from what I’ve seen and read, the characters are birthed inside his mind as soon as he has a basic story idea. Then they just start running willy-nilly in there while he gets a pen and paper and simply documents what they do. Myself and a few other writers I know say that’s the best way to write. My best stuff comes out when the characters just start doing shit, of their own accord.
My advice, watch girly shows (sex in the city, girls behaving badly, etc.) and jot down things they do that aren’t “natural” to you and your other male friends. Pay attention to female friends, lovers, cashiers, relatives, bus drivers. When in doubt, ask a lady “What would you do in this situation?” "Why do you cry all the time?"
One of the best femmey moments in Kill Bill, I think, was when Uma was doing the pregnancy test, and she actually palpated her abdomen and breasts. Some guys would include the abdomen part, but it totally wouldn’t occur to them to add the breasts. shrug