couple of comments - great looking picture so far, but you seem to have heavily smudged the base of the tree and the silver shoulder (arm portion) armour appears to be coming thru the gold shoulder armour plates on the nearside of the picture. You also seem to have a white halo surrounding your figure, you could maybe try getting rid of this by using a file format such as tif to save alpha channel info before going to the compositing stage. Just a few suggestions