We've been through picture posing before but, really, you can never really go over it too much. This time it's not my vague remembering of a friend telling me about an Oprah episode she saw once but an article by a former model handler from Elite. Oooh Aaaah.
I'm sure you'll have read some of the tips before but the one that really stood out to me is #2: "Put your tongue behind your teeth and smile, which will relax your face." Let me know if it works for you but I find it hard to put my tongue behind my teeth gently. I've been practicing this in the mirror for the last day and I keep having to clench my teeth together to keep my tongue from not showing. Ok. I think this blog post has officially gotten weird.
Better luck to you with the photo tips.