The background isnt the best. YOU NEED TO MAKE THE RENDER BIGGER!

& for god sakes take the blur off the render, makes it look terrable with the bg..


do that and maby you got something,

also add some contrast to the render and maby take a little away from the bg. or play with the lighting some.

Im not bashing on you im trying to help you, i just didnt know any other way to say it all

ok well keep working at it!