Should I Get a Sliding Genioplasty? (photo)

So I'm 16 and iv'e always been very self conscious about my lower jaw and chin. It feel as if I either have a short lower jaw, a weak chin, or both in combination. It gives me the appearance of having a double chin regardless of the fact that I'm actually fairly skinny. My teeth match up together so I've been told I don't have an underbite. I was considering a maxillomandibular advancment, genioplasty, and some type of contouring of the neck. Just wondering if anybody had any ideas? thanks=)