Thank you so much, that's very kind.
I'm afraid I'm still struggling a little though. I saved the file but when I uploaded it as an avatar the animation had gone, same thing if I paste the imgur link in. So I uploaded it to the wiki and yay, the animation worked but I couldn't then see an option to make the wiki image my avatar.
Sorry, I'm absolutely terrible at this stuff. Once I sort this out I'm not changing avatars again!