Single-ply, double-ply, four-ply or other. Coarse fibers, polished finish, no slubs, many slubs. Choosing colors and pigments (Green pigment or not?). The choices are more numerous than one may initially think. Silk construction will not just yield a unique finish, they will pose differing potential problems when stretching and installing. Even the width of each silk section impacts the installation method as well as the final finish. The species of the silk worm (or spider!) will determine certain characteristics of the silk construction. Guidance in choosing a proper silk is a good idea.