What Are You Doing To/With Your Car Today?
Tape off all the silver. And spray the black. I'm guessing the silver is polished something? Find the widest pin stripe tape you can for the edges. And just blue tape for the bulk of the tail light. Start a small section and post it before you go hog wild on it. I'll walk you thru it. Get a brand new X-acto blade just for this job only.