How will I know what I’ll look like after a rhinoplasty?

I’ve been thinking about getting a rhinoplasty since I can remember. I’m not nearly 30, and previously attended some consults a few years ago, but didn’t commit due to not feeling financially secure enough. I’m now in this position and believe I have a surgeon identified (Dr Mark Baldwin, Melbourne, Aus). How will I know what to expect I’ll look like after surgery? Can I request morphing, or djust need to trust the surgeon? It’s stopping me taking the leap.