Place the large domed piece on the pendant back plate. Use an ultra fine point permanent marker to mark where the rivet hole needs to be punched. Use a 1.5mm metal hole punch to make the hole. Rivet the stacked cupped flower pieces to the back plate.
Pro Tip: As with all designs you make, you make changes on the fly. Here it was decided that another cup flower needed to be added. It was cut from a piece of scrap, textured, cupped and riveted in place. When that was still not enough, balls and bud stems were added for more interest.