You most likely set it to your profile, you need to set it to Avatar picture inside of you profile settings. Go to http://emptyclosets.com/forum/members/smartsunny-29900.html then hit customize profile, then under Settings and Options is Edit Avatar. Add your picture there and it shows on all your posts. hope this helps
Under Your Control Panel on the left, the third section down, is the Settings and Options, then hit edit avatar.