Your not the only one expereincing this! i feel awkward talking to people too, wondering if i look ok when i talk, felling forever conscoius about the way i look and if i am normal or starnge. i think its just a teenage thing, though i dont know anything about what teenages have to go thru or not. hope you find peace and remember, its ok and relax, forget about what people think, JUST BE YOUR SELF! -x
It Is just a normal teenage thing. You just have to have confidence in yourself and remember that they are just as nervous making new friends and such. Don't worry about it and talk to your parents about it, they can and will help. :)
It could be a phase... Have you ever thought about going for counseling?