Rinse kiwi in water and blot in a towel. Cut off the edges and slice the kiwi into circles. You should get 6 equal circles. Lay the kiwi out on the towel, cover with the free end to remove excess moisture.
Outline the outlines of the snails on baking paper. The large circle should be slightly smaller in size than the diameter of the kiwi, about 3 inches. Next to it, place a 1-inch diameter circle. You don't have to have a circlet in the house, use shot glasses or cookies. Turn the paper over with the drawn side down and place it on a board or tray.
Melt the chocolate. This can be done in a water bath. Fill a saucepan half or a third full with water, and heat it on the stove to medium-high heat. It is important not to let the water boil, as this can cause the chocolate to melt improperly. Next, place a smaller bowl over the pot of water and add the chocolate pieces. Stir constantly until everything is in a liquid state. The easiest way is to melt it in the microwave. Adjust the microwave power to no more than 350 watts and heat the chocolate pieces in pulses of 30 seconds until it is completely smooth.
You will need a steady hand and a pastry syringe to draw the snail's outline, head and tail with chocolate. While the chocolate is still soft, glue on the eyes and kiwi circles.
Place the dessert in the refrigerator for 15-20 minutes or until the chocolate hardens. This will help create a hard coating and keep the fruit and berries fresh. Transfer the chocolate covered kiwi to a chilled serving plate along with the mint leaves.