Pimpin..... ok try this go for a james dean look if you can. Maybe a leather or jean jacket and maybe if you alter that turtle neck thing(like remove it) that would be cool too.
But it looks like you are on the very first steps of learing how to use your image editing software. This isnt a bad thing, all good things take time. From what i gather you greyscaled all the clothes then changed the tint for the pants and the jacket but left the shirt grey. ANd as good as that looked you were hopping for something more correct? Ok try this you didnt wash out the texture with one color so you have won half the battle you realize the need for detail. Try messing around with layers and the effect they can produce. I think once you get the hang of it you will be astonished.