This was a 3 interruption painting. By the time I got back to it the first time the lamp had slipped its mooring and I had different light conditions. I decided after interruption two I needed to wipe out the bowl and re draw. After interruption 3, I went to bed. So this morning I finished up as best I could. I've come to the conclusion that I just have to finish the thing in one go because I can't hold my vision of it, the wholeness of the idea in my head if any distraction prevents me from going all the way to the finish. This smacks of The Princess and The Pea.