>>82329862
That is a start already. You need to make do with what you have and put what part of you looks best forward. If you have a good sense of style and such, it is pretty attractive.
Also I am not saying this as a backhanded compliment or anything, but some of my friends went out with men I frankly found below average to ugly but they themselves were looking pretty good. Stay strong and believe in yourself. You already found you were handsome today in the mirror, just forget about that jaw imperfection and work on everything else to look best for yourself first and foremost, and potential women.
Effort is attractive.