Like I said, I love the lighting. I'm a sucker for good shadowing and simplicity sooo... this is downright awesome. However, the shadowing near the bottom, above the light source, should be closer to the girls than the shadow near the top --- which you did perfectly. But it should also be clearer and more defined. As the shadow splays out wider across the top of the wall it will be blurrier and have less of a shape than the bottom. Right now, they're about the same amount of blur.

Other than that, cool stuff. ^^

By the way, what's with you and ecchi anymore, Brom Brom? =_=;; Seriously... too much for your eyes, youngin'. *hands a cookie* Go watch some Sesame Street.