After I finished the render process, I knew that the Photoshop stage would be a beast. While the overall impression of the render looked great, in full zoom 6000px you were able to see all kinds of things that didn't look too good. So I took myself a break for a couple of weeks to do some other work. I literally had no motivation to attack this one. When I finally mustered the will to carry on with the project, the first thing I needed to do was to combine all the different renderpasses. Once that was done, and my plate for the actual Photoshop magic was laid out, I started to add additional textures and sky elements. That helped to define the colour composition and atmosphereic look I had in mind from the start. Last but not least I had to go back and re-render a lot of elements to add more detail or render completely new elements to fill areas with life. And yeah, I completely agree, that the pic was full of detail right from the start. But I'm a detail nut and always have in mind how a large print of the pic would look like. I enjoy pictures that you can look at for years and still discover new details you haven't noticed before.