Changing a pinched nose tip and creating a straight profile to a wider tip with a break at the tip?

My nose is very pinched at the tip and when I smile it also looks crooked. Its not harmonious with my nostrils. It protrudes to far from face and has no break at the tip. i would like more of round and feminine tip. My original nose was round and had a nice break right at the tip. I am an opera singer and appearance and being able to breathe well is very important. I think I only have one more shot at getting a nose I can be happy with and I need to find the right doctor. Please help. Thank you.