I found some 7"x7" canvas wall hangings at Dollar Tree. They had flowers and birds printed on them. That style didn't really go with Jr.'s theme ;o) So I changed them up a bit. You can use blank canvas- it's just more expensive.
To make these dinosaur wall hangings you just select a base color and paint them. I wanted a textured-kinda-rough look. So I used several layers of paint. I mixed different amounts of brown with the red paint to get slightly different colors. I left some places "messed up" on purpose.
podge them onto the canvas.