I like a rougher skin texture because it picks up oxides and other surface treatments so well. First one on left is made by pressing a tool repeatedly (so many times!) into the form. Next two are made by pressing onion bags into hardening clay heads, brushing with slip, then peeling it off before firing of course. The last I pressed burlap on the original plasticene head, then cast it in iron. Oh, and noses. You can see I love to make a nose! The bigger the better. Love a good honker.