I hate giving generic advice, but be urself. Not because u r a beautyful person inside (I don't know that) but because when u try 2 hard, people c through it!! So I guess if u HAVE to try, try to look like ur not trying u know? And smile always smile
be yourself, dont be fake, im sure someone will think your cool, cause that person might have the same personality as you !
always believe in you.