The next step was to start adding elements, like the water, rocks, and small photographic textures combined, to build the full composition.  The process was not so simple though because every layer had a different colour.  To resolve the matter, I used the Color Balance and Hue Saturation tools.  I made a lot of layers with pass colours and painted fog for the added depth.

At this stage, however, the lighting still needed a lot of work.  After I put the space ship into the background I composited the scene; one layer for the background, one layer for the ship, one for the haze/fog, and one for the light of the scene.

To set the light in the scene I duplicated the final composition in three layers: the base colour, the light colour, and the dark colour for the shadow (Fig12).  With the lighting sorted, I came up with my final image.