A3 ... b3, b5, b8
There's a lot of skulls posted on DA, this is one of the best i've seen!
Love the texture, and value of the substrate! Great use of rule of thirds also. Not being critical, but curious, why no teeth?
Ha!, I was just wondering if there was a particular mood or message you had in mind with the omission of the teeth. To me it adds a notion of hopelessness, or defenselessness, that I love. Not trying to delve into the depths of your mind or anything, but anyway great work!