2:44 PM: i'm leaving the under-drawing for motion 21 as is for the time being & returning to motion 20, which will undergo a rad-rework. after looking at it in the house for a few days, it just wasn't working for either of us.
i started out by going over the surface with a thin layer of white oil paint, which was then scraped off, leaving a semi-transparent film over the entire painting. tomorrow i'll paint into it.