I have a credit rating of 720. What can I do to raise my credit score?

You could balance transfer these to a low interest card thereby increasing your available credit ( This card + the other 2 which will now not have balances) This should improve your credit score even though it is good right now. If you need to apply for a balance transfer you can find the best credit card deals at a credit card comparison site called a href="http://www.CreditCardWave.com" rel="nofollow"http://www.CreditCardWave.com/a