Orton's head looks out of proportion compared with everything else in the sig.
Used Hue blending option? I think you can reduce the opacity of it and add extra layers of other gradients instead. It doesnt look good imo.
Text is fine with me here, but the grunge brushing on the right side was not neccessary imo. Could have atleast added other stuff with it, not over-using that brush in one area. Try mix things up rather than basic (straight forward) things.