Personally, I don't see many things in this render that give it away as 3D at all. The face looks photographic beyond almost any CG face I've ever seen. Look at the teeth. He did a perfect job shading them to look absolutely real. Since everyone's smile in real life is different, that doesn't give it away. The eyebrows look almost exactly as they would on a girl who "plucks" and pencils them in, so that doesn't actually give it away. I think the iris of the eyes are the only thing that really give this away. They need just a hint more detail. And the ears are a bit too perfect. Otherwise, I bet you could pass this off to almost anyone who doesn't have a "CG-trained" eye and more than half of them would believe it was a photo... Someday I hope my 3DS Max skills can reach this level. Amazing.