Step 2: Print and cut stencils
For the big stencil the image can be split up into multiple letter-sized pieces, but it is much easier to print it out on one sheet. The problem is with the cost as Kinko's will charge you a TON for a print this size. I found a printer that specializes in printing out blueprints for architects. The prints are black & white and the paper's pretty thin. In other words, absolutely perfect. In the bay area I used Sukam Copy & Print which did a great job.
With your stencil printed, go to town with an X-acto blade to cut it out.