everything what is black will stay the same and everything what is gray will displaced, so if you create a displacement map for a outfit you need to creat first a black map then add the noise in the places where you want it displaced.. see good the setting on the blue fur, how bigger the map (much small details) so better the fur... don't foget to plug in the fur displacement map into alternate diffuse to get rid of the dark areas and let the fur catch the right light.. if you don't do this you will see wrong shadows ;) you can use smooth polygons option in rendering too.

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