Do not do what I do.
Apparently my spinning book didn’t really make clear [or I overlooked it] the part about how you can take the yarn off every couple of winds and move it to your wrist. More like Amy’s example.
I am pleased with the final result, which worked out nicely once I got circulation back. My first plied skein!
The teal and purple sections worked out almost exactly even, and there is some variation in the fiber to natural gray, but only the last 6 inches or so turned out one color.
OK, I have a long way to go in adjusting the tightness of my twist, but I am still looking forward to making this into a hat or something. I have 95 yards or so and it should do nicely on a size 9.