Necrotic is a quick skin I did for the head of Magdalena, a Quake 3 model by Bastiaan “SkullboX” Schravendeel.  (Yes, I like skinning old stuff- it provides a lot more options for your own creativity in my opinion.)  This was more or less an exercise to see how nice I could make rotting-ish flesh look.  I think it looks pretty nice.