The second one is more dramatic and you can see the backlighting in her hair as well as the expression in her eyes. The light spot in the middle of the leg is distracting, though, and you might minimize it if possible. Also, in the second one, you might smooth the right side of the swirl where it goes out of the range of the render... or extend your image. that way the movement of the viewer's eye won't stutter, but proceed smoothly around. The light-hues belt anchors it nicely: the image is centered enough to be calming, but there is sweep and movement enough to be interesting. Nice job! Carolly