That I would like to layer your image as a background and put my own work (Photo manipulation or drawing) on a layer above it. That way it looks like my subject is inside the dilapidated abandoned building. I would also try to blend the two images together in am attempt for it to look more real. With your permission that is.
When I look at this picture I feel as though I could step right in and explore with you. The positioning of the stairs and the window draw me in and the continuation of the stairs up to the left makes me aware that this scene did not end with a stairwell. Great use of light and shadow balance!