Sorry, artistically this is off. It is not only the shadow that is problematic, the knife blade is curved and makes the knive look curved. This should be straight and the shadow, properly executed, should created the illusion of depth and angle.
If you cant take criticism then you shouldn't post your tattoo's on ratemyink DIPSHIT!!! what a fuckin retard. P.S the shadow looks more like marshmallow man than a knife! wasn't talking about the shading dickhead.