Will Finn published a rough of what he says is an early version Pinocchio as a real boy. I've placed it next to a frame from the film that seems to be the closest to the pose. The differences are not all that striking. The shape of the nose is definitely different, as are the pupils. The cheek and jaw line in the rough is softer and more appealing than in the final frame.
Beyond that, though, there's not much difference outside of what a clean-up artist would normally do to a rough. Will mentions how doughy the hands look in the rough, but except for getting rid of fingernails and slimming down the right thumb, the finished frame doesn't change the hands significantly.
There's not a lot more to say about this, but I do think the direct visual comparison is interesting.