Pinch by hand, one clip at a time, should be effective when people are still young and their five senses are not fully formed, but it is basically impossible to do so in adulthood. I often pinch my nose, but it's useless. If you really want to change the shape of your nose, you must have an operation. The most difficult problem in the world will be solved one day, but we don't know if we can wait until then.