Like Sharron says, that is very good, and considering it is on pig skin makes it even better.
The shades and colours would be quite a lot better on the real thing, so hopefully we will see it 'REPRODUCED' shortly.
Ps. You really do know how to clean up the piggy, and maybe you could share your methods.
here in the states piggy is hard to come by prob have to trav to philadelphia to get some. when i do find some it will give me something to practice shading on . Ive got the general outlinning down pretty well an the fill in but shading with grey or black is a little bit streesed for me but practice makes perfect.