Andy Dufresne's Cell Wall Costume

My costume is Andy Dufresne's cell wall from the movie The Shawshank Redemption. I got the idea after seeing the image of the warden looking through the hole painted on the wall of a bar in my town. The costume consists of a large cardboard box that I spray painted gray on the front and black on th back. I ordered the exact poster he had on his wall from the Internet and cut a hole in the box behind where the poster would lay. I glued a piece of black cloth on the inside of the hole. Then I found the picture of the warden looking through the hole, had it blown up and printed out. I stuck it to the back to give the idea that the back of the costume was in the hole looking out.