Bottom swatch was warm water in the sink, 3 minute soak (per the Wool Wash directions). Hand aggitation and squeezing as I would do for any hand washed garment. Rolled up in a towel. Dried flat.
The batting had some natural variation and I think that the top one had a little more loft going into the experiment, and continues to look more lofty afterwards. The bottom one seems very wrinkly and stiff.
From the front side the machine washed piece seems even loftier, but again it started that way.
The straight line stitching (center sides of each block) was my color experiment. I suspect I'll be quilting the outer borders with either gold or pink thread. The dragonflies and V shapes I quilted from the other side, so now know that my stitches when compared front to back are not nearly as even as when viewed only from the front.
I do have 1 more swatch I was keeping as a control. I may have to do an abuse test and toss it in with my regular laundry to see what a warm/cold wash and drier cycle will do.