Prometheus Underpainting

I've completed the underpainting for "Prometheus" (16"x20", oil on board). Things are pretty much going as planned. Painting directly on the white ground has kept the colors a little pale which will work well when I proceed to do the overpainting. I didn't know if I was going to like the lamp, it was a last minute decision to add it in, but now that I see it I think it fits. I'm debating whether or not to oil out before the next pass. I guess I'll try a little bit without it and see how it goes. I'm off and running on a series now and I'm going forward with a take no prisoners attitude.