How can i change my apperence?

ok, hey im brandie! Ive had it roaf my entier life. When i was 6 i got into a car crash with my dad. A drunk 18 wheeler hit use a lets say the airbag jacked up my teeth and well i have a huge gap now. I moved to a new school and i got laughed at. And i made lotz of friends but also lost alot of them. Anyways im movieng back so i wanted a new me. Same personality but differnt apperence