Line a wide plate with parchment paper. Set your coating(s), such as chopped pecans, walnuts or pistachios, on small plates. Stick a candy stick or small skewer into each apple ball. Swirl, dip and completely coat the ball in the melted caramel. Quickly coat the bottom of the ball with your coating. Set apples, stick-side-up on the plate. Keep refrigerate until ready to serve. These are best enjoyed within 30 minutes or so of making.