flow is really bad seems realy crowned and the is no specific light source and there is not realy any depth...sorry?...With the lighting issue try using the dodge and burn tool it will hopefully help out the lighting not rilly in this case because you got those brightr spots through out your tag I trust everyone, just not the devil inside of them.
I used the render too about a year and half ago back when I was a stubborn photoshop user:
I'm not saying its great, I'm stating how you've downgraded the render quality and that is a no no in my book.
Embedded vimeo videos will not play in HD because I don't have a paid account on vimeo. Click on the HD button to view the video in HD on vimeo's site if you so choose to do so.