Fat smile with a relatively low body fat

Im currently 19 years old and have double jaw surgery planned in about a year to correct an overbite but i dont think my overbite has to do much with the way my facial muscles pull when smiling. when i smile i get very fat cheeks with no definition in my smile creases with bags forming under my eyes. iv searched about my issue but i cant seem to find anything. what treatment should i undergo to fix this? ill provide my smile along with some smiles that i would want mine to look like.