I would like to know how I could get this side of my jaw to look like the after? (Photo)

I am fairly low body fat and potentially have over developed masseters. I also still have my wisdom teeth. One side of my jaw is slightly larger and more rounded than the other side. I was wondering what I could do to correct it. I have an edit of what I have in mind. I also may have excess buccal or peri oral fat. I also want to avoid adding too much width as my jaw is already pretty wide.