You gonna do fine bro.Just let it go nice and easy.There is no one perfect in this world,we learn through experiences and ..."moments like these cant go wrong". Party..Lots of people..and nervousness,thats of course..let it approach towards you think like a boxer,let the opponent come to you. In case you get too nervous and words getting stuck in your mouth...imagine" the crowd in the party all in their underwears...and you are the only one fully dressed"....shame on those people right....now see who is superior ..YOU and the winner is YOU. Always try to make her feel good,talk something nice and try to be romantic(funny),show some hospitalities like opening door..letting her in first..pulling out the chair for her,filling up her empty water glass,grabbing napkins for her and that kind of things are warmly well regarded by women. You gonna be fine dude.... god bless the moments hurri