Looking at your photos, your chin is slightly recessed and the lower portion of your face is considered short compared to the rest. A genioplasty would move your chin forward and down, bringing balance to your profile. An added benefit is that this would also elongate and add definition to your...
The best long term option could be to contour down the chin bone on the longer side to create symmetry and balance out your chin. However when contouring down bone, there is a chance of skin laxity or ptosis. It is favorable that you would not need to remove much to get the result you are...
It can take up to a year for swelling to completely resolve after and osseous genioplasty. It should not change your lip volume or make your lips smaller.