Let's stop and consider: have I morphed the sewing machines so much that they're no longer identifiable as sewing machines? Should I enlarge the hands so they become a more prominent part of the image? (remember, this all started with the hand prints). Does the composition draw the eye in? The operators are anonymous silhouettes, which fits with their nameless identity, but should they be less cookie-cutter, more realistically shaped?
Meanwhile, a supply problem: as the weather gets warmer, the thrift stores aren't carrying as much woolen clothing. Even in cold weather, there's not a great deal of 100% wool anymore. This past Saturday, I lucked out at a garage sale, and found a old, ugly long brown wool jacket with a heavy fake-fur lining. I didn't even bring it in the house - I sat outside on the back porch and cut out all the fur, the lining, bagged it up for the trash and left the wool hanging on the line to air: