Need to be more outgoing, or I might lose him..?

I'm seeing this guy who lives in a different town and we established that we really like each other. We make trips back and forth to see each other every week. The problem is he works as a dj and has a super confident personality, the guy can make friends with anybody and I mean anybody! Plus he is always in the spotlight and likes to bring me along. Me on the other hand I am really friendly and nice but no where as outgoing as he is or I wish I would be. He can walk up to anyone and say anything, I can't even get the courage to walk up, let alone say something. I care so much what people think. I do have a very energetic crazy side but only my close friends really see that. I want nothing more than to be able to just say and do things and share my opinions with him but being around him as happy as it makes me gets me so nervous. I feel like I have to be perfect and that everything I say should be perfect. I've had this problem for the longest time of trying to impress everyone, wearing the nicest clothes, doing my makeup and hair perfectly overyzing what I say. I feel like a freaken mindless barbie doll and this has to stop! This has made past relationships fall apart due to the lack of communication. Can anybody give me some advice on how I can show him the fun, crazy fun loving side to me and not be this girl who people take out to show off only. Thanx!