On KING.COM how do you change the avatar?

On the main home page click the grey "Edit Profile" button, its just above and to the left of your current Avatar. This loads the edit profile screen, toward the top center of this screen is an orange "Edit Avatar" tab, click it to load the edit Avatar screen and tools. Edit your Avatar and click save........ Tip, the more you play (spend) the more Avatar options are unlocked and become available to you.