I have a VERY weak jawline, almost to the point where its basically non existent. I do not have any strong, angular features which meant I've inherited a VERY asymetrical face but my main issue is my neck/jaw /chin area. I have no jawline definition at all. My chin connects straight to my chest, giving an ugly, fat turkey neck appearance. The chin also looks slightly inclined back. Is this a weak chin? I might also mention i have very crooked teeth which gives me an overbite. How can i fix this?? :(