Hmm .. well, for a start I look something like a scruffy Orlando Bloom, mixed with Luke Perry. Think Luke Perry in Jeremiah. That goes down pretty well with the ladies for a start.
The next advantage is my accent - I live in Australia but my good fortune has seen me spend half my life in other countries, including formative years. As a result, my accent is a peculiar mix - think of something between Irish, and Cockney. Most conversation *begin* with: "I love your accent, OMG, where are you from??! *giggle* Are you Irish?" Aussie girls, for some reason, love any kind of Irish accent. I've never *lived* in Ireland, but I guess the combination of countries I've lived in forms together into a kind of Belfast/Northern Irish accent. Like a mild Jimeoin, maybe?
Ok, now to flirting:
I become slightly elusive in responding to questions. For example, the girl asks if I'm Irish; I'll say "No, actually. I've just lived in lots of different places. You been to Ireland?" And send it back to them. I haven't given them any information about myself, really, but there's hints of a rich and varied history. It intrigues them, and makes them want to ask more questions to get to the bottom of me (so to speak), and also I find out lots about them because, frankly, women like to talk about themselves. Put yourself in the frame of mind of waiting for a friend to turn up - so turn to her, talk to her, make eye contact -- but never for a second let her think she is the centre of the universe. You are. Keep checking the room like you're looking for someone. It'll subconsciously frustrate her as she'll think you're scanning for potential mates - and she'll want to get in their first.
But yeah ... it helps if you look like survivalist Luke Perry and have a psuedo-Irish accent, however. I can't understate that lol.