I find myself wondering why you're showing so much of the room. Is the focus supposed to be on the girl or the mess? Both would make a valid artistic statement so I'm not saying that sarcastically at all. If the room is important, one thing you might do to enhance the background is to scoot the chair/desk towards the (viewers) left so that the area in front of the bay window doesn't look so empty. You could also put some other props there on the floor - extra shoes or boxes or something to emphasize the clutter. A rug might be nice, too. She looks a bit too close to the headboard for her legs to be pulled back like that. I find myself expecting to see her feet up on the night stand. You might consider moving the camera up even more and rotating it on it's x-axis so it's looking down towards her more. That'll make it easier to see that it's a bed yet not have the footboard (which also needs to be lit) take up so much screen space.

Before they made me they broke the mold!
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