here is an example of that. My cousin's little boy, Jonathan, turned one a few months back, and I decided to skip my traditional cupcake and I cut out the word one from some transportation fabric I found I thought was cute. I used some double sided steam a seam paper (shown in the tutorial I attached to the word here above). You can go over the edges with thread, or puff paint, or nothing at all. It just may require a little ironing down before each wearing/washing if some of the seams start to lift up. Simple, and a lot more affordable than some of the personalized shirts online.