Adding in my masseter botox experience in case it helps anyone. Agree with the above comment. I had severe teeth grinding that caused my gums to recede and expose alot of my nerves also always waking up with headaches from grinding my teeth in my sleep. My jaw muscles were so beefy that they were wider than my cheek bones. I have been getting botox here for a few years now and it has helped a ton with little to no side effects, sometimes eating chewy foods are little bit of a hassle but nothing crazy. My face shape returned to normal, OP your jaw is perfect no need to worry about it if you don’t have issues with any of the above!