According to Sanderson, Narg(The Trolloc who feigns death and waits for Rand to return to his farm in the first book) WAS the one who killed Asmodean. He was joking, of course. I just thought that was funny.
In any case, great artwork! Love the trolloc's ferocity.
I was envisioning the scene in the first book where Rand goes back to the cabin for supplies after the Trollocs attacked and that one 'smart' Trolloc stayed behind pretending he was dead. So the picture in my mind was; Rand's back to the viewer and the shadowy looming hulk of the Trolloc in front of him, kinda like the Trolloc you have in the background.