Sure! Multiply in the color channel. Part one is a multiply. In left multiply, Stone shader from Clint(Force drop), in right, Bricks (From LHS set to 8, 16, I think) in second channel a Blender. Part opne of blender I forced drop of Orange cloud shader (Also from Clint) Part 2, Was a value, I think, and multiplier was Spots (Set them to be not very many, and bigger) The "window" is a drawn on layer using the rectangle button at the top and forcing a clear shader onto it. (Hope this helps... I am trying to remember the order that I used, and might have it a little wrong.