Genetically Excessive Buccal Fat Distorting 18 Y/o Girl's Faceshape?

My mom & grandma had the same lower face as me. (None of us have ever been overweight, I am 5ft 6in/110 pounds). Now that they are older, its just buccal fat deposits drooping. I rather have skin hanging when I am older then have fat sagging over. I know the doctor I want, he is an expert in it. This is genetic and wont ever go away, so my face wont prematurely age because I actually need it. So what could go wrong at this point?

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