Humm..
First thing that I saw that wasn't right was the pink, shiny spots. Too many of them, and there is even some in shadow areas.. doesn't make any sense.. to me at least... and why the pink nose?
I must agree with minikitten, the torn is a bit weird: looks like it's flat, and made of metal? (too strait, no texture).
The proportions are good, very nice details on hands, feets, very nice shading overall, nice outline too... this is pretty solid!