Avatar Problems

[SonicSplit]

So I have been trying to change the avatar in this account to the avatar below but everytime I try to change it changes it back to my old MineCraft avatar. If this happened to you and you fixed that problem please tell me how to fix it. It is a 200x200 image so it meets the requirements.

 

[MoLoToV]

You'll have to use Gravatar to be able to chance your avatar. You can find a guide on how to use Gravatar here :
http://www.minecraftsurvivalgames.com/threads/how-to-use-gravatar.87942/
QA;TL