You can use TwitPic (see related link) and sign in with your twitter account.
You upload your picture on too twitter
The Avi on Twitter is your profile picture (Avitar).
Follow the related link below to add the band to your Twitter picture.
Save your Facebook picture to your computer and then upload the file as your profile picture within the Twitter settings.
if you do not have a picture on twitter that is what comes up as your profile pic.
By saving the image on Facebook to your computer, then uploading it on Twitter.
A. Butterfly
You click on upload a picture!
Save a gif to your computer and upload it as your profile picture on Twitter.
You HAVE to have a Twitter and go to TwitPic and enter your twitter username and password on the top. But you must have pictures on your laptop or computer.
Connect your iPod to your computer and download the pictures from your iPod to your hard drive. Then, sign in to TwitPic (or another online image host that supports Twitter) with your Twitter details and upload the picture.
You need a picture with a .gif format. And it has to be animated.