Follow the 4 steps below to change your avatar!
Step 1 - Tap your avatar on the upper right corner of the games page.
Step 2 - Tap "edit profile" on the upper right of the screen.
Step 3 - Tap "change avatar" under your avatar.
Step 4 - On the "pick your avatar" page scroll to find the avatar you wish you use then tap "select" at the bottom of the screen.