No problem mate.
Hope it comes in useful.
I had to make a bunch of decals for my game as the repetition of the stock textures, was raised as an issue by a few of my beta testers. So, in order to break it up, I made some decals of cracks in the floor, cracks in the walls, cobwebs, graffiti, and writing on the wall by the ghostly little girl!
Decals work great in any level to cover up noticeable seams or, as I used them, to break the repetition.
Cheers
Jay.
