How to fix uneven jaw?

I'm trying to get into mewing, but it seems to me that my jaw is a bit uneven. Would mewing worsen the effects? How can I remove this uneven growth in my jaw, without getting TMJ problems?

I know sleep is a factor, and I usually sleep on my right side(which is on the left of the screen). What's the best position to sleep to allow me to make my face get back to looking even?

https://preview.redd.it/o72mhfs0kbra1.jpg?width=836&format=pjpg&auto=webp&v=enabled&s=50940260496585aa778999a2554ff4ab114b88b6