The end result is somewhere between satisfactory and pleasing for me. I could possibly have spent more time blending, but a more important observation was that, as the time drew on, I paid less attention to moving the highlights back toward the light. I think it's pretty telling in the final product, but for future efforts with OSL, which I believe there will be many of, I will have noted this point. At any rate, here are the painting sequence pics:
And here are the pics with OSL "done". Feel free to let me know what weaknesses and places for improvement you see.