Im doing a show right now, and I want to use a drop hung right behind the Grand curtain. The actors on stage will be lit from the back so that their shadows are cast on the drop. Then, It would need to be released from the top and fall to the stage. The theater I'm using does not have flyspace, but we do have a catwalk which is exactly where i would want the drop to be hung. Any suggestions on how I could make the curtain drop? Also, which fabric should I use for the drop? I dont want it to become transparent when lit from behind, I only want the shadows to be visible. also preferably lightweight so it falls nicely and can be dragged off easily. I'm on a strict budget so I would perfer the cheapest, but any ideas are greatly appreciated.