|Hi Alex, welcome to the Critique Zone!
I think that you are beating yourself up unnecessarily in the photographers comments. This is a really nice shot. Clinical, to be sure, but that's also the nature of Vodka so why not? You seem to be developing a somewhat minimalist, clean style and I, for one, quite like it.
There's really not a lot to critique - you have nailed the technicals from where I'm sitting. The lighting and 'tone' is spot on and whatever PP you have done works well. If I was being picky, the limitations are in the reflections in the bottle (a doorframe on the left and something dark on the right), and in being able to see the edge of the table - but that is really nitpicking - I'm not sure if the rules would allow you to make the table edge shadow disappear but it would be risky.
Overall, a really nice take on the challenge.