bottom of his jacket is bothering me... stretched to fit =/
and if the sketchy look was the look was the look you were going for, then you should use line direction to add depth rather than just relying on shade changes...
the use of smudging makes me think i need to get my eyes checked out, untill i look away and realise its not my eyes that are blurring, its the actual picture...
octopus seems to be suffering from a bad case of rigormortis
would be interesting to see the concept vectored, it just screams "anime" to me