i wouldnt recommend the razorblade work unless your experianced with painting. very, very easy to mess up and cut down all the way to the base metal. just wet sand and respray the clear coat. if its just a body panel or two tape off the other panels and wet sand the messed up panel, then respray that panel.

so if you messed up on the passanger door, tape off the body panels around that door, resand the door, then respray it. since you just painted the truck this trick will work (paint hasnt faded).