WOW I like the Nana sig a lot Hessah! :D
What I do a lot with my manips (especially real people and horses), I smudge the character. If the render/pic is naturally big (2500px or bigger), then I might skip that step, but if it's smaller, then I'll have to smudge it. If you find that the picture you cut out is really bitty,
choose the blur tool, set it to anywhere around 10-20% (try 10% first), lock pixels on the layer, and smudge. It gives off a really amazing smooth effect if done well.
The pic you used seems to be of a really bad quality Hes. ^^; I can see the all the bits LOLOL. xD -counts them-