Here's a colouring tut DALDOS requested.
It is translatable as long as you can find out where white balance is
Open a 500x150px canvas and add the image of Dean. Resize the width to 550px. Add the first picture of Cas to the left and resize to a height of 200px. Set the image to screen and erase any parts that cover Dean. Duplicate the layer two more times, the first should be set to screen also and the second to soft light. Then add the second image of Cas to the right. Do the same thing as the first pic but the second and third duplicated layers should both be set to soft light.
Merge the layers together and go to colour- Auto- white balance (donít know how to find it on photoshop, sorry).
Then add the following fill layers
#741a1a screen 100%
#315533 soft light 100%
#a28944 colour 50%
Merge the layers together and alter the Levels- input 35, 1, 206 (not exactly what I used but itís close enough)
Add another fill layer #305588 screen 50%
Merge, duplicate the layer and set to soft light 100%
Add text brushes using #966f59 and set to addition
Add a textured brush (I used watercolour brushes from deviant art, canít remember exactly which ones though) in same colour and set to soft light
Add third brush layer (same textured brush as above) in #805d5e and set to colour 50%
Add a final fill layer #000000 and set that to soft light 50%
Merge and use dodge tool using a soft brush set to highlight 50% and brush over Deanís face. Duplicate and set to normal 50%. Finally add border