- Wash the watermelons and cut ¼ inch slice off the bottom of the larger watermelon for stability.
- Use a pen to sketch out the open mouth design as seen in the picture. Avoid drawing too far back on the jaw so you leave enough rind at the back of the jaw to support the top of the head.
- Cut out mouth section and clear the mouth area of fruit. Use caution to avoid cracking the jaw. Hollow out the top of the head first to cut down on weight. Insert a large square of yellow watermelon inside the mouth to hold it open and support the top of the head. Take care not to over extend the jaw and crack the rind.
- Cut the eyebrows and nostrils from a piece of the other rind. The eyebrows will be cut like crescent moons, and the nostrils are cut in the shapes of inverted teardrops. Use the channel knife to create the details on the eyebrows and within the nostrils (see picture for ideas).
- Hollow out the eyes with a melon baller, cutting all the way through the outside of the rind. Attach the eyebrows and nostrils to the head with toothpicks.
- With the second melon (or other colorful fruit) and the leftover flesh from the dinosaur head piece, cut triangular shapes that mimic jagged teeth. Stuff these bite-sized pieces into the mouth of the dinosaur, filling in around the large square piece that is holding the mouth open.
- Being very careful with the pointed ends, cut the skewers into various lengths and line the top and the bottom of the mouth with them just inside of the rind. Place them in with the pointed end out, using pliers to help secure them in place.