Um, just to check, are you the straight male or bi female wanting tips?
Sprouts, lots and lots of sprouts.
I've never flirted with a woman. I am bi curious but I'd never have the guts to flirt with one! But I would say flirting would be different with a man then a woman.
And it also depends on what I'm looking to get out of it. Generally, I'd say when flirting mith a man, it's all about body language. Talk a load of crap but as long as you're giving out the right physical signals you're okay. In the past I've been told a couple of times that what I do with my eyes really does the trick!
I'm just stating the obvious really, aren't I? Sorry I'm no much help.
But, don't worry if you think you're hopeless. I used to not be able to look at someone I fancied without making a fool out of myself, now I'd say I'm a pretty good flirt!
Just try to be confident in yourself. It makes all the difference.
I think you can even do evening courses now! Or there's a book called 'the flirt coach' by Peta somebody which is a good read - it's basic NLP so good for all communication stuff in all situations, not just flirting