First get your image to the size you like and print it out on printer paper. Not too small – because it’ll be tough to cut.
I decided to go with 5 inches. Don’t worry if you get it a lil’ pixelated on the print-out - iz just going to be used as a stencil.
Trace the image onto the back of the paper of your choice. Wrapping paper, craft paper, whatever. Just make sure it’s a little bit taller than your tracing (in my case, approximately 7″) and as long as you want your garland to be, around 20-30″ unless your paper is so thick that it would be difficult to cut through.