Quote Originally Posted by sirjoe View Post
(I need to drastically improve my PS skills.)
Take a number & get in line. Me too!!

Quote Originally Posted by sirjoe View Post
... You mention the crease in the paper... how would you bring that up through the other drawing layers in PS? I tried to get that by placing it on a separate layer, but it just ended up looking fake.
There are a few ways you can do it. First I need to know how you inserted it: It is a separate element from both the paper & the map, or is it a part of the paper layer?

First, you can make sure the blending mode of the actual city drawing layer is set to "multiply". Also/instead, (if you layers stack up right) for even more "pop" you can use a displacement filter. (Butch Curry does a fine job of explaining this on his "Fantasy Cartography Podcast #10" (http://www.youtube.com/watch?v=iDtNQpxj3Iw). )

There are other techniques, too (like Apply Image & channels), but rarely do you need to for just a crease.

I hope this helps at least a bit!