Hi Francis, a female here :o)
The way my hubby found out I fancied him when we first met was I kept looking at him across a small social club we had near where we lived, I'd catch his eye then look away (on purpose so that he knew I liked him). He tells me now that when I would stare at him when he was sat at the bar (with his back to me), he was actually watching me staring at him thru the mirror behind the bar!
So lots of eye contact, and apparantly if the woman starts to mimic your movements like you touching your face, she touches her's etc.. I think if you get the eye contact, get her interest then you start to instinctivly know how things are moving.
Good luck! :o)