First let me welcome you to the DPC community.
This is the first image that you submitted to DPC, and you have already have learned one important lesson.
If people can’t see what you mean, you will score low.
So your picture must be big enough and bright enough to get the message across.
A good I can give you is to calibrate your monitor.
I don’t know, but maybe your photo looks ok on your monitor because it is very bright, but as you have seen, but the majority of the voters and commenters didn’t see it.
Just google “monitor calibration” and even better, if you are serious about photography, buy a hardware calibration device. That way you ensure that the photos look the same on all calibrated monitors.
Don’t let this low score get to you and try to improve with what you have learned, submit again and see your scores go up. It takes time, it takes effort, but eventually you will get great results.
This is probably too dark and grainy to do well. This could have been better if perhaps you either brighten the glass or darkened it so that it doesn't show at all.
To brighten the glass I'd suggest using a flashlight and a longer shutter speed so that you can "paint" in some highlights with the flashlight.
To darken it I'd use selective color in PS to bring everything but the brightest reds to black and then maybe a curves adjustment to tweak. Also, that bright spot in the red arc could easily be turned into red to blend in using selective color.
As for the grain any noise reduction filter should improve the refraction arc so that it's smoother and more appealing.