@Koz:
The background doesn't really fit the render too much imo.
A lot of emptyness, it would look much better if you made it less wide.
The lines going over the focal distract me a bit.
I recommend looking at the rule of thirds for focal placement and probably some lighting, and depth tutorials. The light is coming from below him, but on the render the light comes from above. The flow is ok, but not great.
A basic black border looks better in most cases.
The effect is fairly cool but is seems like a different render would be a better fit for it.