[header] How to make a basic template for creating a diy reflector [title] Get your foam board. [step] You can usually find that at a nearby dollar store or a craft store. Measure out a 9 " x 12 " inch' sheet'. 
[title] Get a pencil and start measuring on the board. [step] Draw a line 2.5 inches (6.4 cm) from one short side and another one 3 inches (7.6 cm) from the other short side.