How do you know where to jump on a springboard?

Most springboards will have a piece of white table about 4-5 inches from the top of the spring board. You will want to center your feet across that white line. When jumping on the springboard, make sure your knees are bent and your chest does not lean over, or you will receive a minor deduction from the judges. You should like you are sitting in a chair with good posture if someone were to take a snapshot of you as you made contact with the springboard.