It does a classic Emboss nothing exceptional but in addition to an 
                     Overlay
                    Combine the input image with the output of its internal modifiers using any Blending Mode
                    Read More
Overlay
                    Combine the input image with the output of its internal modifiers using any Blending Mode
                    Read More
                     set on multiply for instance it can have a nice touch (and many other combinations exist):
	  
                    
