I'd say twist her around a bit, so that the angle is more figure flattering (ass tooted out more). Soften the shadow to make the leg more visible.
Originally Posted by Randall Creed
The rim lighting at that time of day is a great. I bet if you twisted your butt towards the light it would highlight it nicely. (Like Randall suggested, I think.) A bit later in the day, or closer to the wall will place the shadow as a repeating form higher up on the wall.
PS: It's a good shot, just can be better. The down side of critique is photographers are never satisfied with their work, as we always look at ways to make it better...