Paint the hearts and clothespins using white craft paint. Roll on one side, let dry, and flip over. Paint the edges and let dry.
Apply a coat of Mod Podge to the three hearts; don't do the edges. Let dry 15-20 minutes and repeat.
While the Mod Podge is drying, separate the napkins from the bottom layers. You can use tape to help. You just want the top layers with the designs.
Place the napkin down onto the arrow. Place a piece of parchment paper on top of the napkin, and run the craft iron across the top several times. While you are doing this, the Mod Podge is melting below the napkin, and the napkin is adhering. Keep going until the napkin is fully adhered, including the edges. Repeat with the other hearts.
Let the wood cool after ironing. Use an emery board to gently sand away the excess napkin. Sanding at an angle works very well. Continue until all the extra napkin is removed and set aside.
Coat the tops of all the napkins with Sparkle Mod Podge and let dry. Repeat if you want more glitter.
Place the hearts down on their faces and glue the clothespins so that they stick straight up with the clip part at the top. Let dry completely before displaying.