well he likes you enough to ask you out which means you're probably already his ideal woman lol you don't have to change for him.
but if you really wanna impress this dude, you won't go wrong with these traits lol :
-classy, modest
-can stand up for herself. be a little feisty. have a mind of your own.
we generally don't like those overly submissive, "i'll do whatever you like" type of women lol
doormats in other words. you won't get any respect from him if you do that. trust me. you won't be memorable in his mind.
-be a kind-hearted woman but also tough at the same time. don't tolerate bullshiit.
-look feminine. you could have a feisty, tomboyish personality but you gotta look feminine and sexy lol im sorry but this is a requirement lol it's not up for negotiation lol
-have a goal in life. a purpose.
-be faithful to your man
thats about it