Could I benefit from masseter botox injections? (Photo)

I think my face is wider than it should be and I am unhappy with it. I have a low body fat % ,yet my cheeks look full. i would like a more angular face, when i feel the sides of my face they seem to feel quite muscular. But I'm not sure if those muscles are much larger than the average persons? Also the right side of my face (on the right side of the photo..as its mirrored) is fuller than my left. As I clench more on this side, this makes me think that I do have quite enlarged masseter muscles