I can really appreciate the perfection of some of the japanese itajime pieces I have seen after practicing this myself. This piece is 11×60″ and was divided into 2 lengthwise pleats before doing a triangle concertina fold. The silk is slippery and not as easy to fold as paper.
I moved the circular blocks several times and dyed the silk after each re-positioning. My intention was a little different than the result but I now know what I did “wrong”.