@5rettski Observation and speculation can be informative but sometimes the best way to learn is to actually recreate the effect by starting from first principles. It may be helpful to break this problem down into it's constituent parts then work through solving each of them individually to build up an understanding of the…
I added some more details to the railstation tunnel and added a lot of kids drawing in the childs room and in the cave. These drawings are 'everywhere' to tell you the general story of this place.
^ thaths my story =) And one more advice, if you cant draw, i strongly recommend to learn, because texturing and sculpting (like Zbrush) requires drawings skills.
Bloodhound, do you have any previous education or training (self or taught) in still life drawings, figure drawing, or painting with acrylics, oils, etc?