Using a static background you can also imitate a camera tilt to change perspectives. This is a background using somewhat simple perspective to take an eye level shot and turn it into an upshot.
Using this background, character A can run towards eye level cam, leap and come down closer to cam and kick character B, then stand up in an upshot.
This is really basic cinematography and the basics can help make a board really work and saves the background designers from having to do too many bgs in a short amount of time.
Key and Teeth 