I feel like I'm ging to puke and it's not even October yet.

I joined (more like was forced to) a competition at school. What kind of competition you ask? A BEAUTY PAGENT. Yes, you read it right. Me, miyualice is going to join a beauty pagent. HA-HA-HA. I feel like I'm going to collapse. I feel like I'm going to DIE. I'm normaly a outgoing and friendly type of person but when facing a big crowd I freeze up. I feel like I'm going to puke. I feel like dying. The pagent is going to be on October and I have no idea what to do >___< So, any advice here?