I love doing my nails and change them every week. It's taken me forever to get a good result, i.e. smooth coverage, no streakiness, etc. Practice, practice!
My big discovery has been to feel comfortable coloring outside the lines. Nail polish comes off skin pretty easily, so I don't worry about getting a little sloppy. It fixes itself soon.
My favorite brand is OPI. Way worth the price.
Even though it's stinky, I use Seche Vive topcoat. Dries fast and dries like granite.
I used to feel a little edgy about being out in public with nail polish. Now I don't give it a second thought. Confidence is everything, and the gals at my local Ulta think I'm the coolest thing going.