Tonight I bumped into a lovely Photoshop folded photography tutorial on making a photo as if it had been folded and unfolded like a map!
We’ll use guides and selections to create the folded sections of the image, some gradients, a layer blend mode and one of Photoshop’s filters to add highlights and shadows, and we’ll give the fold lines a worn out look to them using a custom brush!
The estimated time is around 30 minutes and I highly recommend this one.
The tutorial from photoshopessentials.com is quite straightforward and the only problem I had was to find the artistic brushes in CS6, and if that happens to you, go to Preferences > Plug-ins > Show All Filter Gallery Groups and Names and that will solve the problem.
You see both there´s result and mine and I recommend to pick another photo for the sensation of seeing a new result. Good luck!