Step 1: Supplies
two bright Red LED lights,
Cardboard, of course. Or something different, such as poster-board.
and, an empty duct tape roll.
Step 2: The head and body.
Next, make a tube that looks like the picture (sorry, no measurements) and close up one side. Then, duct tape his head to it later. I wrapped everything in a gray duct tape, because I thought it looked robotic and neat. you can do whatever.
The arms are aluminum foil, so you can bend the elbow joints when you are done. i wrapped the aluminum foil in duct tape, to match the body.