First of all I would like to thank everyone who has come to find this deviation of mine. I greatly appreciate all your comments and to save me repeating myself on each response, I just want to write a big 'thank you and you're welcome' here.
So yeah! You're welcome and thank you!
I thought I'd make this post to answer a few questions just in-case it doesn't work for you and all the basics of stuff so. I hope you enjoy the brush! I made it into an FAQ to make it as easy as possible.
Here's the Tutorial
EDIT 2 [25-02-2014 11:00am BST]
I received Adobe Photoshop CS6 as a birthday gift just a couple of days ago and whilst I was transferring all my settings etc. I decided to try out the Smudge Tool to see if there was any issues with this Version (I upgraded from CS3).
I am happy to announce that it does work!
Although Photoshop CS6 has Mixer Br