8 Surface DETAIL
Surface detail should be added last to make the surface look rich and vibrant; it shouldn’t change the silhouette of the model. at this point I create the main scale patterns by hand, and for the rest of the details I use skin alpha brushes which you can easily find on Zbrush Central. You can also paint your surface details and convert them into Displacement maps to be projected in Zbrush. Both methods are very useful for creating surface details.