essentially, it’s a printed-out photo of the ghost in a picture frame, but the glass part is spray painted silver (the inside of the glass is). i didn’t spray many coats of silver on it, it’s probably only about 60% opaque. just spray a coat lightly, let it dry, lay it over the photo then see if that’s how you want it. if it’s too transparent, do another coat.
i used this paint: http://www.krylon.com/products/looking_glass_mirror_like_paint