As often happens, what I had in mind didn’t come out the way I was picturing it.
However, this turned out to be some sort of optical illusion …
Looks pleated … I tried to shade so that there’s peaks and valleys, and looks folded. But then I got cross-eyed, and got mixed up on which edge to shade …
Need to work on my shading some more …
A little bit of this and that ... 