Hello m'lord!

Could you please clarify what 'your warrior' is? If it's your profile picture then try to following:

Situation 1 - The Forums:

1. At the right-top of the page, you should be able to see a button saying 'Profile'. Click that.
2. Click your current profile picture, and choose your image!

Situation 2 - In-game:

1. At the right-top of the page, you should be able to see your profile picture. Click that.
   
2. Then once again click on your current profile picture and choose your image!