I think my nose is okay but I do think some very small improvements could be made. Is undergoing surgery for some small refinement not worth it?
This is a very difficult question to answer without the ability to evaluate your nose. A question like this can best be addressed by having a consultation with a board certified facial plastic surgeon or plastic surgeon who is experienced in rhinoplasty. Only then will you be able to weigh the risks and benefits of surgery to make an informed decision.