They look good, but I still think Ned's hair is darker and Catelyn's is lighter. Also, I think Dany and Jon are the best sprites. =P
Appearance wise, Sansa has always reminded me of Priscila, Arya used to remind me of Ayra (for obvious reasons. I'm so silly >:), Gregor Clegane used to remind me of Forde, Edmund Tully reminded me of Roy, The Blackfish reminded me of Renning... >: