Very nice, very nice - it's a real standout example of perfect composition.
I particularly like the way the glasses seem sharp for their
entire body, but this ends at the shadows which are
pleasantly blurred. I think this really adds to the allure
of the shot.
One (very) small suggestion - I would attempt to make a bit o'
increase in the brightness of the glasses as compared to the
white background. I see you're a film user from your signature,
but perhaps you wouldn't be against just a wee bit of
an s-curve in photoshop - adding to the brightness of around the
0.5 to 0.8 area. Of course that may just look like an increase in
the saturation and ruin the oh-so-seventies pastel colors you've
captured so well.