I am so happy with how this turned out! Posted below is the final painting, three detail images, and the color pallette I used. Link to the stunning reference image on DA: http://fav.me/d2psrz2
This is with the paint tube (mostly at 50% pressure, 25% size) and knife (mostly at 50% pressure and 15% size). Canvas is 5940x3960 (the largest size my computer can handle). I had the reference photo up on a bottom layer while I squirted the colors from the paint tube, and then I cleared that layer and did the bulk of the work with the knife without the reference.