How to fix my smile. My smile is small, unnatural and off-putting. I would love feedback on how to improve it.

My smile is small, unnatural and off-putting. I would love feedback on how to improve it. I am wearing my second set of braces to push my teeth together, but have always been more insecure about the shape of my smile. I really dislike how a deep crease forms and my nose dips. I thought rhinoplasty would help (to make my nose droop less), but now I’m wondering if there’s anything that can be done about my smile itself? I want to be able to smile freely for the first time in my life..