Minecraft Diamond Armor Steve Costume: I made this costume from a cardboard box that I sized to the length of my kids so they can move in it. The shoulders are also formed from a cardboard box. The shoulders have a brad attaching it to the body to allow movement in the arms. I then cut 1 1/2 inch felt squares in the diamond armor color pattern and glued them to the body. The head I cheated on, I purchased it in Target. Add a foam weapon and you are complete.