Cut out a rectangle 6" x2" out of whatever material you like, probably something moderately thick and tough like canvas or denim would be good. Then cut two circles for the arms like an inch in diameter. You can center the circles about 1.75 inches from the edge of the 2" side. Then you need a leash, shoelaces are good. Also one of those tightening beads with springs on the leash to tighten the harness when its on , they are on backpacks and jackets. Poke two small holes on the upper corner areas to run the leash through, and your done...... It may be a bit tricky to put it on as your beardie may not like it and give you a struggle, but it doen not hurt him to have it on..... JUST NEVER LEAVE YOUR BEARDIE UNATTENDED WITH A LEASH. You wouldnt want it to get tangled up and strangled, or to slip out of it somehow and run away.