The t-shirt if from WalMart (the only place I can find inexpensive pocketless t-shirts), and I used a free dinosaur applique template. I know the stitching on the applique is all crooked, but I really did it on purpose. I thought it would look more boyish. I hand embroidered "stegosaurus" below the applique.
I am pretty happy with how well it turned out. It reminds me of those cute Carter's outfits I love so much--just a lot less expensive. I think I only spent about $5.50 for everything (including the pattern which I will be using again). When I showed the shirt to my three-year-old son, his response was "You can keep it. I told you I wanted a pterodactyl." (It really wasn't as snotty as it seems--just said in that matter-of-fact, three-year old way.) Thanks for looking!