The very easiest way is to use a "stock" image.

Click on "Desirae's Profile" up on the right of this page...... ^ up there
Then click on the first line of personal Preferences .click on ...>>> EDIT
Then scroll down to the boxed Avatar area... it says things likes I do not want ... upload... URL.... choose a stock (click there)

That will give you windows of images you may choose from, right here at Psych Central... you might just pick one to try out first, rather than search forever through them..

Then be sure to click on the bottom SUBMIT to save your choice. Your avatar should show up on your Profile page, so you won't have to come out to the forums and post to see it.