How can I make my mouth more flush against my face? (Photo)

This concern is among many I would like to correct and I’m unsure we’re to start to look better or if it’s even possible. The second most bothersome thing is my jaw/mouth. I have a long face with a mouth that droops downward with awkward looking lips that poke out and curl outward. There is considerable separation between my nose and lips as well. Is there a way to push my jaw in more in addition to flattening out my mouth and lips? Could this all be covered in one procedure? What do I need?