In this sig, I can see everything and I would be able to tell you exactly what you did an probably what tut you used. Your final render should not be so noticeable. Like, I can see the outline of it, and it doesn't look like it belongs there. A good artist makes it look as if the render is suppose to be there.
Also, your colors are bad. Your smudging doesn't really match the face color and everything so it looks awkward. Look up some smudging tuts
What is up with the white line?