In the center of the page, a sharp shark fin rises out of the water, creating a strong focal point. The ocean waves below are drawn with flowing, curved lines that suggest gentle movement across the surface. Above the horizon, a large crescent moon hangs in the sky, partly tucked behind fluffy clouds that add texture to the background.

The composition is simple but effective, focusing on the contrast between the dark water and the bright celestial body. Each wave has enough detail to allow for shading, and the clouds provide a nice opportunity to practice soft blending. The shark fin itself is the star of the show, standing tall and mysterious in the middle of the sea.

To create a nocturnal atmosphere, try using different shades of blue and purple for the ocean waves. You can make the water near the fin darker to show depth, while using lighter blues or even silver near the top of the waves to mimic the reflection of the crescent moon. For the moon itself, a bright pale yellow or a soft white will make it pop against the darker sky.

The clouds can be colored with light grays or even hints of lavender to keep the nighttime theme consistent. Since this is a cartoon style, do not be afraid to use bold outlines or even add some glitter to the water to represent the moon's sparkle. Using markers for the fin and colored pencils for the sky can create a nice variety in texture.