It took me about 1.5 hours to get this far with it. I was intense with concentration on getting all the angles perfect and placement correct. I tried as much as possible to limit my value ranges and keep each shape simplified.
I worked into it for another 30 minutes later in the day. I placed some of the shapes in the wing and worked mainly on the background. I wanted to find the best way to work the surface into as flat and dark a space as I could get. I will work on this again saturday, hopefully I can keep the focus.