Hi there
parkavenue_prepette, welcome to
!
If you'd like to use an avatar from livejournal all you have to do is save it to your computer and upload it in the Control panel under "edit avatar". But please make sure that you have permission to use it and that you properly credit it.
If you'd like a specific moving avatar made for you, feel free to come visit us on the
FanArt board Request Thread. We'd be happy to make one for you.