Using light blue craft paint, paint the outside of your plastic cup. Allow to dry completely before decorating.
Cut out 2 identical fins for the top of the shark and 2 fins for each side using blue construction paper. Then, cut out a shark tail shape for the back.
Using the black and white construction paper, make a mouth and teeth. Glue the teeth onto the mouth using a glue stick and set aside.
With the glue stick, add two googly eyes onto the front of the shark. Next, glue on the mouth just underneath the eyes.
Placing one on top of the other, attach both identical fins to the top of the cup using a glue gun. Hold them in place until the glue has dried.
Using the glue gun, attach each of the other two shark fins, one on each side of the cup. Hold them in place until dry. Then glue the shark tail onto the bottom of the back of the cup.