Be genuine...talk with her.....be kind, and be yourself. And it couldn't hurt if you're funny. Most women love a man who makes her laugh.
throw an egg?
Some females like older men. The father of my children was 20 years older than me for example. Just don't come across creepy. Make em laugh!!!
Just make conversation! Conversation is seriously underrated as a means of flirtation. To be honest, it's only when men very obviously try to hit on you that they're off-putting.
If you're at a bar, make conversation for a while, and if it's going well, THEN buy her a drink.
Also, be realistic. If you're actually attractive, then she'll dig it. Basic biology doesn't care about age.