1. just print out any ol' image and grab a piece of cardboard and put two pieces at the top to secure image
2. place piece of paper (preferably not standard printer paper, it's too thin, but cardstock or resume paper works) under the image put original printout over blank paper, tape down bottom edge, and then begin tracing out the image with your pin!
here are some pictures of one i did recently that you can use for refernce. oh and little hint...it helps if you take a standard bead and glue it onto the pin, this prevents the pin from going in too deep and causing weird holes. enjoy!