Even if the anatomy is correct this isn't a very interesting shot. It's a straight on shot of a very mundane looking king. He doesn't look like a king, not even a viking king.
His facial expression is boring and lucky for you it conveys boredom. A lazy king really would have more weight on him. hunched over maybe?
I suggest you draw this with paper and pencil before you haphazardly jump into a pixel piece. On paper you can easily sketch 5 different thumbnails in 5 minutes, try it.
Find references if you can. images.google.com is a great place to start. There are a few good stock photo websites. Also look at some other art work involving vikings and things associated with vikings. Try to get a reference picture for everything you're going to make. 2-3 pictures for each piece should put you in the right direction.
Arthur RackhamDavid Raposa (specifically that page)If you want to see some really nice beards find el_coro's project "BUM". It's got some great art and even greater beards. Though nothing beats a real beard.