Looks like the DOF was just a little too shallow to make all of this shot focused. Nice color and the exposure on the top is good. I don't care for the differences in the background colors though.
Nice mood created through interesting light. The thick glass doesn't look all that fragile, though. Small matter--I like this photo. Good composition and tones.
Nice unusual subject, got great colours on it. Nice positioning in the frame, I think the stem being out of focus looks quite nice, was it intentional?