mononoke coloured1

You can color alright!
That's not the problem - if you still want to find one, that is. In my opinion it's about composition: he's too far to the right. If I were you, doing this awesome art ( <img src="e.deviantart.net/emoticons/b/b…" width="15" height="15" alt="" data-embed-type="emoticon" data-embed-id="366" title=" (Big Grin)"/> ) I would move him a bit to the left so that his head may balance the empty corner on the low left of the image. Thus I feel his face will become the main attraction of the piece and not the middle of his stretched arm which unfairly occupies a golden spot where someone's eyes are more prone to first land upon.
Otherwise it's just perfect, you can be proud of yourself!
Cheers!