I had a fan in the room and I took it out and put up a dome light fixture. I can't turn off the light from the switch. The light is always on. I need some help with the wiring. I have attached pictures for reference. Any help is much appreciated.

My church has chandelier-style ceiling fixtures with standard Edison sockets. We replaced the bulbs with CFLs a few years ago. We have now installed two projection screens that get washed out by the nearest chandelier. I need the area behind the frontmost chandelier to be unlit. My initial idea was to affix a mirror to the back of the chandelier, casting shadow on the screen area while reflecting the light towards the congregation, but that would be a major project with fiddly adjustment to ensure the shadow area includes the screens, and these chandeliers are HIGH up. Plan B: what if there was some sort of semi-cylindrical reflector, with a slim base or tab made of non-conductive material, that could simply be inserted between the lightbulb's base and the socket's sleeve? It would be a cinch to adjust and be a lightweight, no-armature-needed alternative to the mirror idea. Searching on Google reveals nothing. Do you know if such a product exists? Thanks!