indeed the HDRI added realizm to your scene.
still, the alcohol looked better IMO in the previous render. now it's...clean, too transparent. Also above the alcohol, it seems that there is something in the bottle, or some label in the upper half? or it's just a refletion?
it seems that the ashtray and the cigarette get less light from above.
the new position of the gun is gr8!
i'm shure that with few more tweaks the scene will get there