A round nose is caused by many factors, such as the overgrowth of tissues in your own nose or the collapse of your nose columella. If you want to change your nose, you should do it in a targeted way, instead of using autologous cartilage, it will become a pointed nose. If the nose is round and fat, cut off a part of alar cartilage and fold it in to remove excess tissue. If the nose is not long enough, the nasal septum cartilage and retroauricular cartilage can be used to prolong the nose. Of course, if it is to be prolonged, the cartilage of nasal septum is better. If you want to make the tip of the nose look good, I suggest that you use the cartilage of the nasal septum as the nose pillar and the cartilage behind the ear as the tip of the nose. I hope to adopt it as the best answer. Thank you. If in doubt, you can log on to Jiujiang Xiehe Plastic Surgery official website for online consultation.