As part of a small project, I mocked up a "confidential" "NSA" document. While it isn't real, friends are saying that it's convincing enough that I should place some text at the bottom saying
Please note that this is only a replica, and in no way intends to masquerade as a real NSA document.
Should I add anything else, i.e. also saying "We (the creators) do not have the authority to create real NSA documents."?