As you look at the page, your eyes will go straight to the shark's face, where those large sunglasses sit perfectly on his nose. He has a rounded, cartoonish body that makes him look very approachable and kind. Floating all around him are different sizes of bubbles, rising toward the surface in cheerful clusters.

You will also find several small fish darting around the shark, perhaps trying to keep up with their fast friend. Along the bottom and sides, tall strands of seaweed sway in the invisible current, adding texture and life to the ocean floor. Every element, from the shark's fins to the tiny bubbles, works together to create a busy, happy underwater world waiting for some color. The composition is balanced, giving you plenty of space to experiment with different shades for the water and the reef plants.

For the shark, you might choose a classic ocean blue or a soft grey, but since he is a cartoon, a bright purple or teal would look amazing too. The sunglasses are a great place to use your brightest markers or crayons; think about neon yellow or a bold red to make them pop against the cooler colors of the water.

You can use different shades of green for the seaweed to show how the light hits the plants. For the bubbles, leaving them mostly white with just a tiny stroke of light blue on the edge creates a realistic translucent look. If you want to make the water feel deep, try using a darker blue at the bottom of the page and transitioning to a lighter shade near the top. Using a white gel pen for highlights on the sunglasses can add a nice glossy finish.