If you haven't already, you might want to watch these two tutorials from ZombieNirvana. He really goes into how he wraps the objects on his map around the folds and creases of the parchment texture. He talks specifically about text vs. map elements.
It might be a little pedantic for you, but its probably worth watching since its what you are working on.
You, sir, are a gentleman and a scholar.
"Unless I'm allowed to carry around a gun to shoot their giant killer-spiders, Australia needs to stay the hell away from me. Also Australians, who if they have lived this long are obviously agents of the spiders and not to be trusted."