They look great! I have just finished 'The Clash of Kings' and I have already heard that they don't appear in the second season, which saddens me greatly because I really liked how Jojen and Meera helped Bran with his dreams and with his escape from Winterfell. They seem to know so well what to do and what is right, without showing fear or hesitation.
You drew them beautiful: Meera as the older sister who looks out for her younger brother, but who is a little less serious than her brother, and then Jorjen who is younger but who knows the importance of his dreams and what he can and can't say. Great portrait!