If you are in middle school, you don't have to care, because all the organs of the body will be shaped at the age of 23. Before that, the face shape was changing, and the round face could be properly made up, and the head shape could be changed to make the face shape slender. Eat less, you can slim your face, talk more, or sing with your mouth wide open. When people get fat, they fatten their faces and stomachs first.