so i tried a little technique that i think people use in photoshop and i'm quite proud of the result
-eaugh-
Don't do this, the Result is not too good.
I'd recommend doing it w/o doing the photoshop technique.
(Aka work it pixel by pixel)
Although, I can see why you did it. But still, try to work it up from scratch and use whatever drawings you have as reference material.