OK, I lifted all these pics from another site. I PM'd the owner asking for permission, it's been over a month and no response, and he has not posted on the site in quite some time, so since it's a simple, low cost project, and so easy even I followed it with no written instructions, I figured I'd repost them here. If it's against rules then just delete it, won't bother me any. Just trying to pass time in between laundry loads.
Before I start, the guy who did this used mylar to line it with. He used mylar tape to affix it. I used a spray adhesive because it holds better, and I do not want a fire hazard if the tape fails and the mylar drops down onto the bulb. Please substitute a white paint rated for high temps.
He did not give specifics on wiring the light, but the pics are fairly self explanatory and I think ya can figure it out. I was gonna show pics of mine and how I did it, but I don't want to be responsible for you setting your house on fire if I did it wrong LOL. Maybe an electrical whiz will see this and tell y'all how to do it safely. He also used a bigger piece of sheet metal and vut it in half to make 2 different reflectors. casa de pot sells several different sizes of sheet metal, so you can buy and build to suit your needs. Whole project was under 20 bucks for me (excluding the light), had some things already in the garage already (brackets,wood,junction box,). Hope this saves someone a buck or two.