I setup the BigBikeRiders Photo Post so that after you load a photo and go back to the thumbnail you can then right click on the thumbnail and copy the url and use it for your Avatar in your profile.

What I did was set the thumbnail size to 120 by 120 instead of what I had it set at (150 by 150) so it will be the right size and you won't have to mess with it.

I can still load them for you if you like, I just wanted to give you an easy option to do it yourself.

https://bigbikeriders.com/photopost/index.php