Batmitzvah dancing?!?!?!?

So i want to know how to be welcomed into the dancing circles and what not. So tonight i have my last Batmitzvah of the year, and i want to have a fun time. The Batmitzvah girl is kinda my friend, but we are not such great friends, but i know basically all the kids that are going to be there. Every Batmatzvah ive been too lately, my friends have been dancing in these circles with eachother and some girls and they are pretty good friends with the girls. Im not great friends with the girls but i would like to know how to be accepted in these circles. First how do i get in the circle without being looked at? I know im friends with them and all, but like i said im not great friends with the girls in the circles but i want to be accepted in them. Also if im not a skilled dancer what are the best dance moves to do and not look like a freak? Finally how do i get some of the girls to start to realize that im kinda fun and awesome through the dancing so that they pick me for snowball at the end? Basically over all, how do i get these girl to like me at these Batmitzvahs? Girls please help and guy give me some tips. Please help!