Hello!
You can actually google your issue and you'll get a zillion answers from there.
To briefly share what I know:
Environment: dim the lights, light some candles etc etc
Dressing: Start buying seductive bra/panties. Black for the vampish look, white for the pure look, red for sultry, blue for innocent girl...depends what your guy likes

Guys tend to like lace I think.
Tricks: Roll fruit (like cherries) round your lips and lick it seductively. Get imaginative with whipped cream, and grapes put in the belly button.
Ok I shall not go on in case this post gets x-rated... But seriously you should either buy FHM for tips, or do a google search...