These look great again. You managed to give them a really old-fashioned look. What I often do is apply a 'wrinkled cloth' tiled bumpmap texture over some clothing parts, subtle and by UV. It is not exactly where it should be, but takes off the smoothness for medium distance.
Just plug the image map shader with displacement (perhaps through a transform shader to resize (not world)) into the input of the appropriate default shader. Something like this (which would need some work).
But from a distance you maybe wouldn't see it.