Be a kind gentleman, and compliment her. Walking by a dress shop ,"Oh, that dress looks nice", you reply,"It cannot make such a beautiful woman as you look any nicer." Take any opportunity to compliment her that you think is appropriate. Too much and it'll get annoying. Too little means no compliments at all.
Make intelligent conversation, and only share appropriate stories. Nothing at the bar with your mates, but maybe about a famous person in history you watched about on Tv. Pace yourself according to her. If she's smarter than you, be as intelligent and elegant as you can. If you are around the same, then don't speak your full mind. If you are smarter than her, don't try to impress her, but let yourself impress her.
Suggest activities you think she would enjoy, but don't push them on her. If she declines, then allow it to be buried under 12 feet of snow, never to be seen again. Try to do what she wants to do, eat where she wants, and go home when she wants.
Don't be overly humorous, but still don't be a boring personality. You want to have fun together for the rest of your lives, so make sure this can happen. Make sure she is the woman you want to live the rest of your life with before doing anything other than what I have told you.
Lastly, don't push for sex. Don't even mention it unless you are at her front door and she asks you in that certain special way to come in. If she pours you a drink, and says she'll change into something more comfortable, then you know what she wants. Just wait for the right moment, doing all this will make her want you alot. Play hard to get if she seems to want you, or if she does the same. When you're in bed, WHAMMO! But don't be silly. Remember to not mention the condoms in your pocket until you get in bed.
Note: Dont date shape shifters, You'll know at the ,"I'll change into something more comfortable" If they are. Werewolves are discernable when you see and 8-foot furry thing looking down at you. Witches have devilspawn, not babies. Their vaginas are green. They have no powers when naked, so take your opportunity to run. Most other paranormal creatures are ok to date, but check your GP first.