|CRITIQUE CLUB CRITIQUE
Compositionally, this shot feels terribly off-balanced. It is cut off at the bottom and has space at the top, which gives it a bottom-heavy feeling. Sometimes, that can be good, but I think in this shot, it kinda makes it look like an accident.
Technically, the lack of focus killed you, I think. Photographing glass is incredibly difficult because a lot of cameras "see through" the glass and focus behind it. Also, it almost looks like you were using a mirror, so that added to the difficulty. If you ever wanted to reshoot this, and I think it could make a great picture because all of the facets of the glass would give a lot of detail and interest, I would suggest using a tripod, an aperture setting of around 8 or 11, a slow enough shutter speed, and an iso as low as possible, to get a good exposure and not have noise issues. Also, get down level with the glass, and don't take the shot from up above, unless that is the angle you want. In that case, make sure you "work it" to see as much of the detail as possible. And don't be afraid to crop in close, or use different colored lights (putting a colored napkin or cloth over a flashlight can sometimes give you just enough hue, then in post processing, you can bump it up a bit) -- I bet this would make an awesome abstract.
Best to you in future challenges.