Imagination - Beverly Cleary

 Romona had dipped her brush into blue paint and had painted a blue stripe across the top of her paper. "that's the sky," she said happily. 

"But that the way the sky is." Beezus was trying to be helpful. She felt better, because Ramona had not plunged in and painted a picture full of imagination. "skies should come farther down on the paper."

Beesus and Romona  Beverly Cleary