Splendid progress with both periods. I particularly like your very effective Karstark leader and the simplicity of your sigil. I have been pondering how to do the sunburst as a simple livery badge or shield device - you've cracked it! I only hope my painted versions come out half so well...
Silent Invader - go for it... If you read all the books there's a wealth of material and detail to develop into a full blown period bash! I can thoroughly recommend Warlord Celts X Mantic zombies for White Walkers...