Hey i totally did something like this! I just cut a piece of cardboard and glued mylar on one side, after that just give it a bend in the centre and keep it away from any direct contact with the light.
BacchusGodofWine Reviewed by BacchusGodofWine on . Reflector question Trying to make a reflector out of cardboard box and foil. Would that be possible? Here is the picture of how I want it to look like. Rating: 5