How do I add my photo to my profile?

You can add [or change] a photo by clicking on your name, which will take you to your profile page. Then you need to go to the edit tab and scroll down to the picture section of the page.

Alternatively you can just click on this link
http://iatefl.britishcouncil.org/2011/user/me/edit

this should take directly to the page.

Once on the page just follow the instructions.