Draw a large oval for the body
Add a smaller curved shape for the head
Sketch a long tail fluke at the back
Draw a dorsal fin on the top near the back
Add a pectoral fin on each side
Refine the body into a smooth whale shape
Draw a curved mouth line near the front
Add a small eye above the mouth line
Sketch the throat grooves under the head
Outline the belly with a gentle curve
Erase extra guide lines
Color the whale blue with a lighter belly
Add shading and simple water details if desired