honestly, you don't need a rhino. I can see what you mean, BUT... the nose needs to fit into the face. in your case: you have wonderful big eyes and perfectly shaped lips, so even if your nose itself is slightly wide, it fits perfectly with your other face features. I honestly think changing it would make you "ordinary", if you know what I mean.
I'm getting my nose done in 4 days (oh my god...!!), i have a wide tip and a fairly broad bridge, also slightly convex in profil (love my dad, hate the nose I inherited
). My sister has a very similar nose, but lucky for her she's got much fuller lips - whereas my lips are thin and my mouth pretty narrow. so what totally works for her (not a tiny nose, but all other features are perfectly balanced) doesn't work for me (I think - however, I haven't told a soul about my rhino as I know everyone will say "you dont need it").
in summary: don't do it. you're extremely pretty, don't lose that "edge" and make yourself ordinary.
Look at Gisele Bundchen; her nose is far too long if you look at it isolated. in her face, it's perfect, because it makes her special.