not happy at all hmmm, well, it looks fine! Maybe you mean that you have imagined something different than what you actually drew/pixelled...
some mini-crits in my opinion, could include the round elbow, as mentioned, and also the lighting on the jaclket seems too simplified, and the location of the sword behind his head could be adjusted to make a stronger silhouette, I originally thought that he was wearing a viking hat with horns on the side....