Hello, if your face is thin, you can eat more foods rich in protein, such as animal liver, beef, milk, egg yolk and fish. You can also eat some chewy food and exercise your masseter muscles. You can also do some facial exercises, open your mouth as wide as possible and bite hard. Repeat 30 times as a group and do three groups. This exercise can plump up the cheek muscles. Stick to it for half a year, and it will have a very good effect.