When should I kiss my girlfriend?

I want to kiss her so bad. And I'll be seeing her a lot in 2 days but she'll be around her friends n junk and I don't want to kiss her in front of them obviously. I've kissed a girl once before but this girl I'm dating now is flippin amazing. She's gorgeous, funny, great personality and likes the stuff I like! But I don't know how to just yank her away from the other people and kiss her. (ps this is her first kiss so I want it to be special for her AND me) I just don't know how to do it. We'll be outside a lot and I just need some advice thanks! P.P.S I'm really falling for this girl and it's harder to be myself because I want to be so perfect for her any tips on how to be my funny self?