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Original text:
I was hoping to make a nice, neat, cool-looking fantasy character, then animate him. It's... not working out so well.
This is my biggest and "best" version of him so far:

I know there is something very wrong with it, but I just can't figure out what it is. The pose seems bad somehow, but I can't figure how to improve it. I'm not sure I like how skinny he is, but again, don't know what to do. I'm kinda lost.
I do like some things about this picture, but it hasn't yet reached what I was trying to accomplish.
What I'd like is advice on how to improve him. Advice on any aspect of the picture is very welcome, but pose and colouring are my 2 big ones. Edits would be very appreciated!
My previous efforts at rendering the same character:
