So I am having a party at my apartment for new years and we are planning for 20-30 people to be there. One of my friends says she is bringing some girls with her and that one of them has a thing for me already. I've only met the girl a couple of times and we've never really had a conversation or anything. I just am not trying to mess anything up by doing something dumb. Any advice? Can give more details on anything if needed.

TL;DR: girl who likes me coming to a party, don't want to mess it up.