Photography's an easy one to crack. Try writing three articles about photography - how photography helps kids explore the world, part 1,2,3. Or how photography improves our psych, if you want to wrap it into your existing interests of psychology or motherhood. Also, I never received a notification when I got top writer. If you don't check your 'about' page, it's possible you've been a top writer and didn't notice. I've never had a notification and only noticed by accident a few times.