One Side of Columella Sticks out More/ Left Nostril is Smaller Than Right One Due to Columella or Septum? (photo)

Caudal septal deviation of the septum can be repaired with a local anesthetic and shaving this off with a minor office procedure.

Looking at the photos provided you would likely need a revisionary procedure to help move the edge of the septum more to the midline. In a good majority of cases, this can be done under local anesthesia with some oral sedation. This prominence that you are seeing is the extreme front edge of the septum (called the caudal septum), which is displaced to your left side. The goal of a revision procedure would be to mobilize this segment of cartilage and reposition it more to your right side. Hopefully this helps. Happy healing.

The most obvious cause of your nostril asymmetry is a deviated septum which can be corrected. You also have asymmetry of the tip cartilages. It is difficult to evaluate the rest of your nose with the pictures submitted. I would need addition photographs to make additional recommendations. I'm afraid that surgery would be necessary to change the features you don't like.