Somewhat hard to see, but the black ground weave of this lampas is actually four different satins. Click to enlarge. It was based on a cloud photograph. It may photograph better when hung vertically and properly lighted. If not, I may rethink this concept and go with only two satins for the ground, for more contrast. That's one of the joys of sticking with the same weave. Each iteration is an opportunity for fine tuning.