I am a complete idiot at this stuff and managed to wrap my trim in gloss black. Use a quality film and don't be afraid to suck at it the first time and you'll be fine I'd think
MAke sue you get whatever you're removing nice and warm though, so it doesn't take paint with it, or tear, or leave adhesive behind
The nice thing about clear bra is it's clear. If you get the bubbles out, which isn't hard, and don't fold it over, which also isn't hard, well, who's gonna know if you are bad at it
I think there are non-marring cutters for vinyl, but I just used xacto knives. Obviously not a good option for a painted surface unless you can do all your cuts at panel gaps and such