Get yourself a grapefruit about the same size as the crystal balls. Carefully peel the grapefruit, keeping it in 1-piece as much as possible. When you get done peeling it, place it in your scanner and get a nice scan. Run it through CorelTrace and then import it into CorelDraw. Send it to your laser with a flat sheet of masking material on the laser table. Carefully weed the mask and apply it to the crystal ball........

;^)
Carl