The detail in this piece is outstanding to say the least, you can see this from the facial expressions, hair and ears etc and the tattoo's are the best part of it becuase they are all accurate and in proportion.
It's so well detailed when I first looked at it. looked like a vector taken from a photograph and edited in Photoshop and or Illustrator.
That being said, the right shoulder seems to be out of proportion with the other shoulder, and a few of the outlines seem not be matching or rather joining up properly in places.
However these are small bugbears. But overall this piece is well done and looks pretty damn amazing good sir. Keep up the great work.