The composition is very elegant, well lightened and colored, I like the three glasses and the nice and soft background, you had a great idea! I think it's a bit tilted and maybe it needs more DOF, unless this was your intention :) Bye Max
Man - this is so close to being absolutely stunning. The lighting is dreamy, especially the shadows on the right. And the double perspective of glasses receding in the background AND being less full is really clever. But, I think it would be better if you could get the bright left most glass so bright WITHOUT the hot spot on the backgound.
I think the wrinkles on the left of the background is a bit distracting. Finally, I'm not sure the glasses are completely vertical.
But the subject, the tone, the lighting are all first rate. I'd really like to see another version where you take just a bit more care with some of these details.
BTW - take my comments with a grain of salt, because I don't think I could do even this well.