As the title says, I have a control cover plate with Paul's sig as an extra cover for my new 408 MT I just got last week.
I plan on going to the meet and greet when he is at my local store in June, and I would like to get him to sign the blank cover on it as well.

What is the best way to preserve it?
Clear coat spray in enamel or lacquer?
Any particular brand work better, and how many coats?

Bad picture, I had the Sony Cybershot set to macro, should have left it on normal.