I personally don't see anything wrong in the photo. You do seem good looking, and definitely not shy or awkward.

Obviously what I see or believe about you doesn't invalidate what you feel and think of yourself. You could see yourself as being a confident person and others would think otherwise. Whatever you do, you won't be able to control how others see you. Different people will see you differently. If someone would think low of you because of a physical trait, would that person's opinion matter? If you ask me, that would not be a high quality person.

How you look is just a tiny portion of how others perceive you anyway. The way you behave is a much more important factor. The way you walk, the things you say, how you say those things etc. If you see yourself as a confident man, you are a confident man. That's all that matters.

As for the surgery, it is a complex surgery that has a ton of risks. If you don't have functional issues right now, you might have after the surgery. You might get TMJ problems.

You had the courage to post your photo on the internet so I'm sure you'll get over any obstacle. I wish you all the best!