Some messy work in need of critique

[Mega_Virus]

The shading is nice especially his jacket, but some area's need darker outline like the knife blade where there isn't a sharp side I would prefer giving a darker gray outline, some of the things there don't make sense or just simply can't understand it like the way he's holding the knife it looks like he's playing with it instead of holding it but I don't know if thats the way you want it if its not make the fingers go over the knife handle, also the gun doesn't look like a gun to me it looks like double handles of a gun, and also looks like its angle is off.
Edit: Plus I just realized its style matches 1up's like the legs, and feet maybe you are the exact same person but I can be wrong.