I made a curtain that hangs just behind the closet door out of that plastic stuff thats black on one side and white on the other. I stapled it to the sides a few inches down and to the ceiling across the top. I also put a zipper down the middle, since my doors open in the middle however you could just overlap the two pieces if you have those sliding doors that open in the middle also. Absolutley no light escape. To keep it open when i'm in there admiring my girls, I put some velcro on the side walls, about half way up and I just wrap and velcro the curtains open. Just make sure you wrap the curtains around to the side walls of the closet or light will escape.