What specifically?
A simple and quick fix for uneven, thin, or misshapen lips can be conservative lip filler
Be sure to go to an experienced injector. The goal is to have the lower lip 1.35-2x as tall as the upper lip.

What will this do?
Can help in playing a part to correct multiple ratios, namely the lower to upper lip ratio and chin to philtrum ratio
Improve the miscellaneous score by correcting thin lips
