Stir some red food coloring into your frosting until the desired 'blood red' color has been reached. For each set of Vampire 'Dentures' - simply cut a chocolate chip in half. Spread some frosting (that you've colored red with the food coloring) on the inside half of each end. Place some mini marshmallows on one half, and top with the other. Pop in 2 slivered almonds, one on each side for the vampire fangs. Secure them in the icing.