Mid lower bulge when smiling? (Photo)

Hello, hope you are well. The notable feature of your lower face is the prominence of your masseter muscles. (It is most apparent from the frontal view). This is not an issue of buccal fat excess, and if you undergo buccal fat removal it will accentuate your masseters even more. I would suggest starting with masseter reduction--there are non-invasive ways of accomplishing this.
Best,Dr. Tower