Bake breadsticks following instructions on package. Spoon small layer of pizza sauce on top of breadsticks. Tear string cheese into long, thin pieces. Drape cheese on top of pizza sauce in criss-cross pattern. Add 2 black olive slices for eyes. Bake breadsticks until cheese is melted, 3 to 5 minutes. Ask an adult to remove baking sheet from oven and place on cooling rack. Let cool on baking sheet for 5 minutes, then transfer to serving platter.