Army of Darkness Critique!

[Audie Eagleheart]

Just for fun, but mostly to learn something from all this, I went on to paint characters from Regular Show into a Army of Darkness theme. Now, I- I'm starting to lose focus. I just don't feel satisfied with the rendering on Mordecai (The blue cartoon bird). I haven't fully finished the rest of him but his is... complete? Something feels off.