Short and Sweet
Resignation notices don't have to be long-winded or even well-formatted to drive the point across. However, it's assumed that you should use actual words when you write them out, on a napkin. Matt probably doesn't know this. but "resignate" is not a word.
Preach
Sign changers seem to have the worst jobs and the most power of everyone here. Imagine a world where a fast food restaurant general manager has to find the ladder to remove a curse word from their sign. If you see someone in a suit polishing plastic letters 20 feet off the ground, you know someone just quit.