Rhinoplasty question?

I want to get rhinoplasty and i've been researching it on the internet but i can't find anything that sort of explains how to fix the problem i have with my nose. It's not long and hasn't got a bump in it, but it's round but it's quite large for my face, if that makes sense. And when I smile, it goes really flat. Whenever i got in arguments with my mum or brother, they'd always use it against me and it's become something that i feel really self conscious about it. Can you find any pictures of what i might mean? (Whenever i look at Nose job before and after pics, its usually because the nose is extremely large and prominent, with a big bump, i can't find anything with what i mean.) and i feel like when i smile, it takes up my whole face. Is there a certain type of rhinoplasty you can get for this. Thanks.