I have had the surgery for three weeks, and my left and right nostrils are also asymmetrical. This may be because my nose is a little crooked but the prosthesis is straight. After all, no one's face is completely symmetrical. If it's not serious, just comfort yourself. It is also possible that the prosthesis only opens one nostril, so the nostril opened is relatively larger because it has not fully recovered. It should get better in the future~ If you have any questions, you can ask me. Hope my answer helps you.