1 direct light + photons = "midday" (direct light was reoriented to cast longer shadows)
1 direct light from the other side + photons (was playing with it's location)
1 direct light, moved again + photons (adjusting photons with textured model of train)
Train has it's own illumination (direct light with modified settings) and reflection (I used HDR image)
Texturing was more difficult stage because of the high number of the objects in the scene, all textures for the locomotive and the walls are 4000x4000 pixels. To create them I've used Total textures vol.1, 2, 3. All the textures were modified, combined. With the help of my small tablet, I've added all the details to them.