I have learned that if you try to use a link and it says it's too big, instead just download the image to your desktop then try to set it as your avatar the other way (Option 2) and it usually works. But the image will still show small.
Take yours for example. I have always assumed it's an image of Rodgers after the Super Bowl? Sorry if I'm way off but so many people's avatars are just a blurry mess to me.