A bit skinnier; give him that "nearly hungry" look, and he'd be perfect. Just a shade skinnier, mind - he's no stick figure, but he shouldn't have a belly, which the lines you've drawn suggest he does.
This is my new favorite picture of Stannis. No doubt about it.
I wish I could go through and give every single Game of Thrones picture in your gallery a , but I'll restrain myself. I'm on Blogspot more than I'm on deviantart, so I'm going to follow you over there. Fantastic pen and ink work. Good luck with the rest of the characters!