Attached Link: http://www.keindesign.de/stefan/poser/

A subtle depth of field effect is also a good source of realism, as there is no real camera that does not show that effect. Keep the focus on the eyes. For realistic eye reflections, I'd recommend using environment mapping. For lighting, get a book on photography. To avoid glowing nostrils, you can try a) increasing shadow map size b) lowering min shadow bias c) switching to raytraced shadows. See the Poser section of my website for a few rendering tips and a tutorial on depth of field.