the laser on the left takes away all the flow :/ Was it in the original render? Also, even though I tend to like sharpy tags, this one is too much for me :/
i think you need to lose the text and the border, they are clashing wiht this piece. and i would keep working with it and establish some depth. but it looks good.
I agree with hells. Yeah, the lightsaber is pretty distracting mabye darken it with the Burn tool so it's not so bright.