I've just ferkled in the wardrobe at Mandrake Towers (phew the pong of mothballs) and found my Christmas avatar. It'll be taken to CyberSketchley's in the morning and ready to wear early December.... (Ho, ho ho!)
I have tried, to change mine, since I've had my christmas avatar up since a few christmases ago haha but I'm strugging with the file size restrictions which is unlike me and my techy photoshop knowhow... sorry about that folks, looks like I'm stuck with snowman again for the duration but I was very proud of him.
Thanks for trying! I can't help with Avatar size as all mine (yes, I have several!) were made for me by Simon, aka Bananafish, yonks ago. Dunno what he made them out of but they never need to be altered and they never wear out!!