I right click (mouse) on pic to copy, the go to your "photo gallery" in windows, then left click (mouse) to paste, it's probably not the easiest way, but it works 4 me since I know nothing about computers, have you ever seen some of the special effect people use, I'm really behind the times, only had this laptop 4 6 mos. In any case, be careful of "permissions" or "copyrights". hope it works for you.
ps: you can also look up "free avatars" I like "avatarity artistic Avatars" it's free, some charge. And I do it as I suggested above. I copied one from the site that Darbla gave us, afraid to use, I owe all my $ to "Love Potion Magickal Perfumerie and Gift Shop" can't afford to get sued !