Hi Cindy,
could this be it?
http://carolholaday.com/htmlpages/st...tuponglass.htm
I am constantly tweeking the set-up and the camera technique as needed.
All of the inside of the original box is now covered with black or white paper so no reflected color possible from the box. If I were to build the box from the start, instead of using a shipping box, I would use the black foam core. I have also replaced the tracing paper diffuser with the same white cloth I use for the front curtain.