Here is the heart template for the Best Friends cookie tutorial that I have already posted up on Youtube. Just adjust this picture to the size you want and then print it out.
Then cut around the black outline of the heart and then through the pink crack, creating two separate pieces for the your charms.
Also I have made a little Pastel color palette to help you match the shades of each color for the sprinkles.
Best Friends Cookie Charm Tutorial Youtube Video!