As cool as this drawing is...
I'm seeing a directional flaw.
The guy was obviously shot, but that doesn't mean he barfs up blood.
I think you need to accentuate the image of the sherif's wound.
-Was he shot in the face? Or the chest?
-And with a caliber of those guns, it would leave a hole in either one.
How cool would it look if his lower face was blasted clean off but the eyes still convey emotions of shock and pain! Teeth flying and the jaw hanging by a sinew.
It's a technical flaw but the rest is mighty wicked.