Great find. I like the pose and BG. It could go a bit brighter and the color temperature could be raised a bit. I also wish for higher shutter speed so the raised leg were not as blurred. If this is more or less full frame you probably could have gotten away with ISO 800.
I take a slightly different view and think that yes, it could be lightened a hair, but I would not make it unnaturally warm with a different white balance. I do agree with Axel that the blur is distracting: it's not quite blurred enough to add "motion," so it might be better if it was sharp.
An otherwise really cool capture.