Dumbo.

The oil smudge is accidental, although it might add to the drawing. It almost looks as if something was thrown at him and that it might've give more of a sense of Dumbo feeling ridiculed and feeling like an outcast or a misfit. In fact this drawing is taken inspiration on how Tim Burton might approach the project since he'll be the one directing it, but I don think know how the film will end up being with Tim Burton involved but I am somewhat curious.