I messed up while painting. I accidently taped the neck pocket too much and the tape went over and stuck to the body. Now there is a part that's bare wood, while the guitar actually has primer and paint. Also, I was sanding a little, and I started to get black smudges where I sanded. I used a rougher piece of sand paper to get the marks out, then smoothed it up with something finer. I went down to the primer. I only had one coat of paint, but when I tried to repait that section. It's still lighter than the rest. Should I just repaint that part until it's close, or should I repaint everything a couple of times, then sand until everything is even?