That's awesome. I've always loved the Valeyard. He was a great concept and I liked the idea that some of the books presents, in which he was really the 13th Doctor.
Amazing picture, though if you had done this more recently you could have found a way to sneak the Dream Lord in as well. Come to think of it, would he be what the Valeyard regenerates into? Or perhaps the other way around?
And I don't mean to sound like an ass but I think the Valeyard was supose to be the 13th doctor.