Guys, what about a girl drives you wild?

Well I really am liking this guy, who i think hardly thinks i exists anymore. anyways, i asked him to prom (he doesnt go to my school) and i REALLY want to impress him that night, i want him to be smitten, in fact, i want him to ask me out. im told ive got a very pretty face...my only downfall is im a lil thick (but im working on it, and ive already dropped a size so thats good) but my dress gives me curves like beyonce lol so i look good in it. how can i really impress him that night? guys, what drives you wild about a girl (personality, looks, everything)?