How do you get a big dragon in Wizard101

You have to click on the crown at the top left corner. It is the crown shop. Then you have to click the button with the shoe. Those are the mounts. You scroll down and see a red and blue dragon. You click whichever dragon you like. Below the picture of the dragon AFTER you clicked it, is the words crowns and gold. you click the gold [if you don't have enough crowns] and buy it.