Hi Snow589 in Maine,
I agree with my collegues that asymmetry is not only in the nostrils, but also the face. Facial asymmetry is very common, and may not be appreciated until one visits the plastic surgeon. Facial asymmetry contributes to the nose leaning to one side. In addition, the nasal septum is deviated as well causing the tip of the nose and nostrils to be uneven.
Plastic surgery treatment would involve a septoplasty with rhinoplasty. Small grafts may be required around the nostrils to further improve symmetry. While the goal is perfect symmetry, there may always be a degree of irregularity despite treatment. Only after a comprehensive evaluation can a plastic surgeon or rhinoplasty specialist help determine appropriate options for you.
Best of luck
Dr. Chaboki