This is a test of commonsense. Complete the next sentence:

How to play cornerback
When the offense lines up, watch the running back's eyes.
An inexperienced back will either lean towards or look where he will go before the play starts, however do not rely on this.
Get into a proper two point stance.
This means you should have your knees bent and feet shoulder-width apart. When the play starts your first three steps should be backpedaling.