This is an illustration for Fantasy Flight Games collectible card game named A Game of Thrones, which is based on the world of best-selling author George R.R. Martins A Song of Ice & Fire.
The character is Harma Dogshead, she is a wildling, and a ferocious killer. She is called Dogshead because she hates dogs, and kills another one every fortnight and uses its head on a post as a banner.
Illustrations for card games like this always have short deadlines, and are supposed to be viewed on a smaller scale than here.