Is there any way to make jaw or jaw muscle larger?

[david1]

I have an oval face shape but I want a more angular one. Clenching my jaw gives that effect but i learned that it could cause an underbite. Is there any exercises or habits that can help improve this? I’m 15 and no surgeries or implants

 

[dddlalal]

Puberty

 

[david1]

Puberty

Thank you! Are there any habits I should have during this period?