From the critique club: What you're trying to achieve is so subtle that small faults grow out of proportion perhaps... there is a nice rythm in the shapes and the subtle colors are great. But, the small imperfections in the glass look more like specks of dirt once inverted. Also, my eye yearns for more sharpness where the glass takes shape - at the rim, the foot, and the curvature. The shadow and the framing work well.
You may already do this but I'll mention it anyway, just in case you haven't tried it yet. I highly recommend using a filter and then making small adjustments with other tools to create a finished product which is more unique and less dependent on the filter. For example, most filters over-soften or over-sharpen an image as a whole so you can go back in after using the filter to sharpen or soften details and it will sometimes make the result even stronger.
I am not happy with the composition on this....perhaps the subject might have been place down and right a bit more to provide a better angle on the shadow which seems obscured as is. Like the hi key effort.
is your glass dirty?? what are the dark spots? ImhO they destroy the potential of this photo. Also a better contrast between the glass and the background may have help give impact.