Connie, A suggestion. On my last GND4 item I used displacement on an almost smooth mesh to make up the wrinkling (not that much was added) but I'm concidering expanding this method.. It leaves open an option for anyone creating a texture or material shader to add thier own wrinkling, anything from rumpled as if slept in, to freshly press, amking for a mor individual look.  You may want to look into that method.

mike