I know I know it's an old concept but I had this image spooking through my head for some time now,
so I finally gave in and made it.
The original size is 9inch x 12inch on cavas board.
I used gesso for the main textures, added the girl and key and some other papers for texturing.
Also I used multiple acrylic layers for the coloring. Other materials used were ink and marker.
Please full view to see the textures
The original is available here : [link]