Intimidated By a girl I want to date

Good morning,

I need some advice from my friends here,concerning a girl I'm interested in. I don't have problems meeting girls, asking them out etc, but this girl intimidates me a bit.

Brief context:
- She's a national sport champion so she knows a lot of people(I too do the same sport but I'm not a champion...I've trained with her once or twice though);
- Initially I thought she was arrogant and spoiled;
- We have friends in common and they told her what I thought of her.
- We went on vacation together because we share some friends and went with the same group and when we were introduced, I told her: "You're an entitled spoiled little girl who's very arrogant!" and explained why, and she was taken aback.
- Throughout the vacation I proceeded to roast her a bit - not too hard - and that turned into playful joking around back and forth.
- I can make her laugh pretty easily;
- By the end of the vacation we were already getting along pretty well

So now I don't know what to do... I talk to her on facebook messenger a bit and she responds quickly, but I don't want to be one more fanboy trying to be her friend etc (and I think I'm not on that level already). I don't want to overdo it either, so I talk briefly, make her laugh and say my goodbyes.

I need to be different from every guy trying to get to meet and impress her.

I think I've got somethings going for me, which is the fact that at first I wasn't intimidated or impressed by her and the fact that she knows that, and that I can make her laugh...
Don't know what to do next. Asking her out seems rushed. I need to "score some extra points" befor that.

Please help?

Thank you