18. Put the image in the background, the first layer above canvas (which was left blank all the time). Adjusted hue and saturation to get the feeling I was going for, and applied Super Soften (at 3 pixels, I think) to create the effect of atmosphere, distance, and partially get rid of the sharp edges and digital feeling. Now took a small brush, and went over everything, adding cracks, an island, rivers, different densities of 'trees', refine everything. Took 2 days to do.