Sometimes I will start a collage with the background thinking I know exactly how I want it to look but after finishing the background I'm unhappy with it. It has happened several times. In this collage, I wanted a dark blue sky with the ground and greenery at the bottom but after doing it that way, I could see that background was too busy. If I had left it, it would have competed for the attention of the viewer. I wanted the boy and cat to be the focal point, not the background. So I had to redo the background using black instead. Although I wasn't originally envisioning such a dark background, the black did work better.