Asymmetric lip fix
Personally, I would leave it. Asymmetry using any technique is impossible to correct completely. In my patient consent forms, I say "The two sides of the body are not the same and can never be made the same." that being said, you could augment the right side (smaller side) since you are still young and your face would support a larger lip. I would only go with a temporary injectable since we do not know how it would age for you. Those are my thoughts.