How can I achieve nostril symmetry after car accident and subsequent septoplasty and ear cartilage graft surgery? (Photos)

I am 37 and was in a car accident 3 years ago that damaged my left nostril, among other cosmetic injuries to my face. A year after the accident I had a septoplasty (to fix a deviated septum) & ear cartilage graft to my nostril to try to fix the asymmetry. I am overall pleased with the surgery but now I'm self conscious about a part of my face that I used to really like. I've been told by my plastic surgeon to leave it alone but I can't help but wonder if there's a way to achieve better symmetry.