concet is cool dude. however the piece is very empty. You based almost everything to be resolved by the smoke. its cool but doesn't say much. the blood finger prints doesn't really relate to the scene. if it doesn't belong, don't put it in the scene. it's the only blood spot in the whole scene and it makes it not belong in the scene. so i'd suggest taking it out. also, blending on it needs to be better but its best that its not in the scene at all.
stock used is cool but i don't think you delivered much of what you were trying to achieve with the concept.
don't take anything as harsh,, this is a constructive criticism/feedback. you may chose to agree with me or disagree.