My temporalis muscle makes my head bulge out over the ears, can Botox make it smaller? (photos)

on the pictures my head bulges out above my ears, a little more on my left side than the right, it gives my head more of a rounded shape which i do not like and i keep thinking about it all the time. Would botox in the temporalis be able to shrink the bulging by maybe a few mm? (Yes my hair was shaved on the sides on this school photo) Hair covers it up but it doesn't look that great because my muscle is very close to my forehead and my hairline isn't that low. Im only 18 btw. Sorry for quality