This was a tough exercise in painting skin. Too much contrast, not enough contrast, back-and-forth, back-and-forth. I finally gave it up and called it "lesson learned".
After posting it on the WAMP forum, Scott Radom offered the following advice:
I think it's often important to maintain "project momentum" rather than strive for perfection on each piece. I think the mini looks good and any frustration you feel didn't appear to wind up on the finished piece.
You hit it on the head, Scott -- project momentum.
And that concept scales. I feel it for individual models as well as for batch-painting multiple models. One thing that's becoming clearer as I press through this current batch-painting exercise is that, for an individual model, I approach the model with a subconscious goal or two, which I want to accomplish for that particular model. The goal might be the OSL effect, the skin, the edging, some particular element or two on the model, etc. So I focus on those one or few goals, in order to gain practice and experience in that focused area, and the rest of the model can be painted to a "sufficient" level.
I'm becoming a little more conscious of this habit. I wonder if I should adapt that approach as a more-conscious and deliberate choice for a while and see where it takes me.
It's interesting what deadlines will reveal to you...