I've seen a few of these letter D dinosaur crafts going around Pinterest. The one we liked the most is from Little Page Turners. There wasn't a template to follow here, so I just prepped the materials by cutting out a capital letter D shape, legs, neck, head, scales, and tail from construction paper. (There are double the materials in the picture above because each of my kids were making one).
The kids glued on the legs and scales.
We used brads to connect the head to the neck, the neck to the body (the letter D), and the tail to the body.
Then we used this $1 dinosaur book from the dollar store to see what kind of dinosaur we made. We decided it had a long neck like a brachiosaurus but because of the scales was most likely a stegosaurus. My son decided to call his "Steggy"!