Make these beauties using empty tropicana juice cartons. However, I would add a pvc pipe a little bigger than what's on these lights or you'll wind up throwing all that hard work away when the lights die out on you. With pvc, you can pull the offending light out and replace it with a new one, if it can't be fixed.
have shapecrete already pressed down into a plastic lined bowl, level the top. Paint leaf and second bowl with oil and press down into the first bowl (maybe weight second bowl with water?) no instructions at click through but lots of ideas