If it is a knife, there may be some sequelae, so do a good job of consultation in a regular hospital.
If you are underage and your body is still developing, it is not recommended. If there is a great demand, you can communicate with your parents and analyze according to the actual situation.
If you are an adult, and have achieved economic independence and have a certain economic foundation, you can do it after knowing the risks and details of plastic surgery.
In fact, you don't have to have plastic surgery to look good, but you can also use healthy methods, such as learning makeup, skin care and fitness. It will make you look better.