Thanks for all the comments! This was my first challenge entry, and it's score reflects reasonably accurately my current skills (complete newbie).
I made the photo in a bit of a rush, hence my hand is in shot and the lighting is flat and badly coloured, but I now know for next time to spend a little more time in preparation! And for those of you who commented on the lack of beer, I tried it with beer afterwards, and it just flattened the reflective curves inside the glass, so I had to drink the beer ;o)
very creative shot. well composed also. only debatable thing is the gridlike background (?tablecloth). personally would've used a different background. where's the beer? :)
The top of the shot is cut off a bit. Having the whole glass in the picture would be better. Might also look better with a beverage in it, then you could also get ripples of the drink in there for curves
Nice perspective into the glass. Brighter lighting and a more colorful backround might add oomph to this pic. I like how the lines of the canvas (or whatever) distort into curves.