This is the concept of the scene as it stands and I liked the idea of adding a subtle colour but the blue in the below image felt too cold so went for green to create the sinister, creepy atmosphere. I also like how the door in the foreground has become an almost silhoutte and the door at the far end in the darkness is only just visible. The strongest element in this composition is the textures of the floor and paint peeling off the walls and ceiling, which I spent a lot of time on the settings to make the texture have a relief feel. The window and cushion on the wheelchair might need some reworking because they feel blockly and don't belong.
|Blocked out composition|
|Added wall and floor texture|
|Added texture to doors and wheelchair|
|Added light and shadow|
|Image flipped horizontally and increased light|
|Image flipped back, increased shadow and added blue|