This is a fantastic piece of work as it really captures your imagination. It made me think of a game or cartoon. Allthough I know nothing about these characters I feel you have presented them to me really really well. I have allready made my own backstory for these characters I love this piece and I am definatly going to favourite. I only gave a 4.5 for the technique because I feel that although they are beautifully drawn, this style has probably been used before.
P.S. Sorry if you were expecting someone with a little more experience in the this style.
I absolutely love this. At first I just glanced over it and though "cute", but then I looked closer and really noticed all of the detail you put into it. I love how adorable it is without taking away from the characters. Ghost and the dragons are just so hilarious. (I love Ghost's fluffy tail!) And I love the little details such as John Snow's Long Claw sword, Arya's expression towards her sister and what is in Tyrion's hand. (I can't think of what its called right now - but I did recognize it) Perhaps my only complain is that you didn't do MORE characters, but considering how many there are in this universe, don't blame you. I kind of wish Arya was holding on to Needle, but her holding onto a cat does remind me of her chasing them in the first book. Interestingly enough, with the exception of Tyrion, they all look much closer to their correct book ages drawn in this art style as opposed to the casting. Overall - Fantastic job!
I must admit I was confused with Tyrion, I had to read the other comments to actually understand who he was. Since they did figure it out, it must be just me I think it's mostly his exprecious, I can't place this expression with Tyrion. For the rest, it's a cool picture