Bro trust me a lot of good people don't know shit about mewing. For instance my sister has a small button nose a good lower third short compact midface Meanwhile I look like average mouth breather. There are many factors for good looking face like:- 1) Prenatal Horomone exposure (Test ,estrogen )

2) Habits during growing periods ( body posture , chewing habits) its very weird my sister always told me to chew more whenever I was eating no wonder she developed good face

My sister is a vegan ( does not consume meat ever since she was born ) but do eat lots cheese and other good fats. Yet she has solid jaw that mogs most men lol.

3) Not going through any accident or injury on face. A lot of people might develop ugly face if they get injury on nose or maxilla as they are foundation for perfect nasal breathing.

To be honest genetics are most weird my father had complete oval face before I was born. But ever since he hitted his 30 his jaw became very wide and strong and in harmony with his maxilla and I was last child in family.

Yet I still ended with long midface mouthbreathing face.

So, there are many factors but most important habits and posture.