Invisible
It happens nearly all the time, that things are done invisible to others. Small acts, gestures, movements not recognized. It is worth looking close. Look ! Look what your model is doing while not being photographed. See all the funny things she is doing while not in your focus, unobserved. Try to catch such moments of unbelievable beauty.
You will never regret. And again it is an easy setup for this picture. Olympus E-5, ISO100, f4.5, 1/30 second to let the roomlight register, one single hotshoe flash bounced to my left into one white reflector a bit behind her.