[@agentmanatee] Really good sheet, I like the artwork you found. Although I must say, that the official term for the White Walker's apocalypse is the Long Night. Just my minor nitpick. 

All you need to do is add a paragraph that's an overview of Sandor's life in the past 25 years and his current situation. Did he finally get himself knighted? Has he let go of his anger? Is he Captain of the Guard? Does he get along with Tyrion and Jaime? Just a little bit of stuff like that. Otherwise, you are completely fine to go.