Step 1: Materials and tools
Some sort of spotlight- I used this but one similar to the other one in the image could be used as well.
Transparency film - I got this (For inkjet printers but they also are available for laser printers)
Duct Tape- any opaque color will work (black or grey, don't get clear)
a Fresnel lens- the one i use is no longer being carried but something like this should work.
some sort of program to make an image on
The one I used is in the above photos