What are you most proud of? I'm most proud of coming up with an idea that nobody else has come up. What advice would you give someone starting this project? I cut out a 18" x 18" square from tag board for a pattern, placed it on top of the t-shirt and traced around it with a pen. Don't worry about the pen marks because they end up in the seams inside the shirt. I cut out the 18 inch squares on the pen lines.