Short chin generally involves implanting a pre-designed prosthetic chin into the chin area, or adjusting the chin bone to an appropriate proportion.

You'd better talk to a plastic surgery expert who is more experienced in facial contour plastic surgery. You can consider KOREA Korean Plastic Surgery Center in South Korea. The facial contour is very good. It is a Korean-style plastic surgery hospital. The director is a senior Korean plastic surgery expert~Technology Trustworthy~