I didn't see anyone mention this, maybe they did and I missed it, but the first thing that came to my mine is "color." Your friend is a very bright white, your poser character has a darker skin. I think everything else looks fine except for that. And whoever said about the area between the eyebrows. That can be done in photoshop, same with the eyeshadow. I'd rotate your camera angel just slightly. You're off by about half a milimeter.