To select or change your Avatar you have to navigate to your Avatars menu.
There are two ways to get there:
1. From the main page navigate to your Shop and then tap "See All" next to Avatar Shop.
2. From the main page tap on your Avatar and then from your profile page tap on your Avatar one more time.
Both methods will bring you to the Avatar List.
From this menu you can scroll to any Avatar that you own and tap "Use" to equip it.
This menu will also show you Avatars that are available for purchase with Extra Credits, Avatar Coins, Daily XC Coins, Avatar Shards, or Leaderboard Crowns. Check out our related FAQ's on how to earn these currencies if you aren't sure!