My nose is too narrow. What will you use to make it wider, some of my own tissue from somewhere? Does this job require incisions outside the nose?
Most commonly I use what are called dorsal spreader grafts. These are thin, rectangular pieces of cartilage taken from your nasal septum and placed along the profile aspect of your septum. If your house has a triple wooden beam down the middle, as they do in New England, you can think of these grafts as the outer beams. They are about 1-1.5 mm thick usually. I do this through an open approach most commonly. There is a small incision across the pillar of skin between your nostrils (the columella) that connects to incisions hidden in the nose. The incision across the columella should be minimally visible only to someone looking for it from below.