How Can Asymmetrical Nostrils Be Corrected?

The difference is so slight in your nostrils that I would leave it alone. It only shows with your head back and is so slight that only you would notice the difference. The chances of making them perfect are remote.

Thanks for the question. Rhinoplasty is used to correct malformation in the nose, including assymetry. A rhinoplasty may even be medically necessary if your nasal assymetry affects your breathing. Cheek and chin augmentation are the most effective procedures for correcting severe facial assymetry. I wish you all the best.

The lower picture demonstrates the asymmetry the best. However, this is the least likely view that your public will see you. The top picture demonstrates little deformity or asymmetry. Although this is a "small difference" to you, the surgery would require addressing the 3 dimensional problem. It is probably more involved than you would like to hear. However, a simple alar base excision could correct about 60% of the problem if that is acceptable to you.

The base view of your nose shows the asymmetry best. Your columella leans a bit to your left. And on your front view, your right nostril is a bit lower than your left. The asymmetry on your front view is barely noticeable. You seem to have thick, oily skin which can limit the beneficial results you could see after Rhinoplasty surgery.
You should consult a board-certified Rhinoplasty specialist to discuss your options.
I hope this is helpful for you.

Correcitng nostril asymmetry is usually done surgically when other areas of your nose are addressed such as your wide tip. However, it can be done as a sole procedure if you desire either with a graft or moving your nostrils as in an alar base reduction. However, that being said most nostrils are slightly asymmetric and it is very difficult to create perfect symmetry if not near impossible. So my advice unless it really bothers you I would leave it alone unless you also want some work done to narrow the tip of your nose.