My nose is very flat and wide. When I smile, it looks like I'm struggling and I can't see my full set of top teeth. (Photo)

Well first I know I have to get a nose rhinoplasty to make it look more normal. But I need to know some questions. 1# do I need my teeth longer looking and straightened ? 2# I have a small jaw and it's the main cause for my double chins, do I need to fix my jawline 3# would my nose look nicely shaped after nose job ? 4# What will help me achieve a Nice Smile were you'll be able to see my Full top teeth? And my nose what look flat and wide.