U just right clikc the picture you want and click copy picture location and the come here and click my settings and scrool down till u see off-site avatar andright click in the sapce and paste and then click submit....Then go back to my settings to see if it worked...If u see ya pic there, it worked, if not then it didnt

How do you do this on a mac?

Im not sure sweetie...Sorry...

thanks anyways! You've tried