I can't use profile photo!

[JaydeScript]

Hi,
I can't use profile photo. When I upload a photo. It looks like that:
https://twitter.com/iamalperberber/status/474476181937324032

 

[Wolf1278]

What format and how large is the photo?

 

[Niall]

For an easy way to change your avatar follow this guide: http://www.minecraftsurvivalgames.com/threads/how-to-use-gravatar.87942/.

 

[Nick]

For an easy way to change your avatar follow this guide: http://www.minecraftsurvivalgames.com/threads/how-to-use-gravatar.87942/.

Precisely

QA;TL.