Word of advice if. It's a relatively easy install, once you understand the process. Which I failed on round one.
First, remove the film covering the face side of the letters, set the sheet aside and pull each letter out carefully from the spacing outline. Set letters upside-down in a clean area. Remove the backing sheet from the outline. Tape outline to hood where you want the letters to be, gently apply pressure to each letter in its space, finally remove outline and tape.