FOLLOW THE INSTRUCTIONS AND LOOK AT PICS IF UNCLEAR.

1. click your name under the "Logged in as" just above the chatbox, or click your name in the chatbox if you have typed something 

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2. CLICK THE WORD AVATAR TO THE LEFT AS SHOWN IN THE PIC BELOW.

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3. CLICK THE "SELECT A FILE" BUTTON AND SELECT YOUR FILE FOR UPLOAD IF ITS A PIC FROM YOUR PC 

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OR

4. IF ITS A FILE ON THE INTERNET, GET THE LINK OF THE PIC, THEN CLICK THE LINK TO FILE TAB BESIDE THE UPLOAD FILE TAB, THEN INSERT LINK AND PRESS SAVE.

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ITS THAT SIMPLE, LOOKING FORWARD TO SEEING YOUR AVATARS