I'm wondering what kind of change would occur if I focus my tongue pressure as well as thumb pushing only in the front palate region, right behind the upper incisors. The force would upwards rather than against the alveolar ridge, the latter being more akin to facepulling. I think I read somewhere that it will help pronounce your jawline or chin, but I'm not sure if that makes sense. Can someone explain what changes could happen and why?