I couldn't post pictures until I had at least 1 post. Read on . . .
I used black plastic last year to block off the light, making a long corridor. Although I had some good lighting (from my perspective), everyone kept saying how dark it was. What I didn't take into consideration was that not everyone's eyes were adjusted to the dark like mine were (I could see everything). My mother stood outside the entrance, and because she was exposed to the same ambient neighborhood lighting (street lights and such) that the trick-or-treaters were, even she couldn't really see much. I even stood right in front of guests, and they couldn't see me. Boy, were they scared! I even had a teenage girl go into a crying fit, trying to get out. Everyone had to restrain her and calm her down. The great thing about that was that she only freaked because of the decorations, not seeing me.black plastic will not reflect alot of light(use it every year) it does reflect some. but with a black light you only get a few spots and they are small.. just make shure you have it pretty well stretched out and not wrinkled