Awesome find, Ravs.

Here is another tutorial that may be a nice complement: it shows how to use Photoshop's displacement map feature to (for example) make any writing/drawings on a crinkled piece of paper look actually drawn onto it:

http://www.taupo.co.uk/pshopt1.html

Scroll all the way down to the bottom to the dog's pawprint image to see what I mean!

(Plus it includes a link to a great wrinkled piece of parchment for a free download!)