Asymmetrical lips from a serious injury - how can this be fixed? (Photos)

Seven years ago, I suffered a serious injury to my lip that required emergency reconstructive surgery. The doctor did great but i can see the unevenness. Ive been looking for doctors to fix it for years but im not sure where to look, and exactly what i should ask for . On the left side of my upper lip, there is a little more skin there than the other side. I attached a before and after photo to tell the difference.