Well, okay, sure.
Let's see, I like the transition from cool to warm tones in the flesh - it sets Jessica in the cool night, while opening up a warm foreground, making this picture really jump out.
However, the colour of the yellow highlights is too saturated. It is a darker colour than the flesh tones surrounding it - this makes it look like paint rather than light. Mathematically, if you are painting in CMYK, the value of the Yellow in the highlight should not be higher than the value of the Yellow in the surrounding skin tones.
It's also a little unclear where the yellow light is coming from. On the box that Jessica is sitting on, the light would seem to be coming from below and the (viewer's) left. However, there are yellow highlights on Jessica that indicates the light is coming from above (her right hand, the one on the box), directly from the front (her leg and hip), from directly below (her right breast), and from below and the (viewer's) right (her hair). Now, light could be coming from all these directions, but that would mean that those light sources should be causing multiple reflections on her limbs (except where blocked). So, it winds up being a bit confusing to the viewer.
It looks like you should have three light sources:
1) The moon. Your backlighting is working very nicely already, so there isn't much to comment on here;
2) Below and (viewer's) right. This picks up the great highlight on the bottom of the breasts and her hair. So, a bit more light from this direction should be added on her right leg (the yellow highlight on her left leg from this direction would be washed out by the blue backlight, so you don't need to worry about that) as well as a little bit on the bottom and side of her face. This sidelighting works wonders to convey three-dimensionality in a figure; and
3) Below and (viewer's) left. This would be more or less the primary light source, the one coming from the front - a bit of tweaking, pushing it to the (viewer's) left would make it a touch more dynamic.
Try playing around with those lighting changes on a separate layer and see what you come up with
