When making a sig tutorial try to be more explanatory. Example I just tried doing your C4D Wallpaper tut, by step 2 you had me already confused, which has never happen before o.0. " 2. Now you are going to make a new layer and fill it with black and lightly brush with a grunge brush in a dark gray color. Set the layer to "Difference" and 100% Opacity." I tried following these instructions and the result was extremely bad. My suggestion would be show the result of this step, or possibly give an example of what type of grunge brush is suitable for this or what settings you should use for the brush technique.