Click on the pencils on the screen left to pick them. Click the pencil on the drawing to apply the color. Reset, if you want to work on it again and click next, if you want to work on the next drawing. Once done with the 3 drawings, replay to play again or take printouts with the print option.
The dolphin is very cute while playing with the ball. But then something is missing. Why don`t you complete his charm by coloring him? Experiment both sober and wild colors and just squeeze all palette combinations.