Create a vibrant and joyful outdoor scene featuring a group of diverse children

Create a vibrant and joyful outdoor scene featuring a group of diverse children waving goodbye as they finish their great outdoor adventure. The setting should be a beautiful, lush forest with tall trees, colorful flowers, and a sparkling river in the background. The children are smiling, holding hands, and carrying backpacks, with some looking up at the clear blue sky. The scene should feel warm, cheerful, and full of the energy of a fun-filled day in nature.