|Greetings from the Critique Club :)
The composition is a difficult one to dissect here really, you have used the rule of thirds with the side of the lens which should work well and I guess it does really, the shot looks complete from an "elements in the right place" kind of perspective. The eye is drawn across the image nicely to what is the main subject in your shot, so from that we can assume the goal was achieved.
I personally think you hit the nail on the head with your comment about the reflections being a bit too distracting, had we the viewer just been able to see the very interesting tall building without all the other overlapping reflections I think your score could have been considerably higher. One thing I am not sure about is did you achieve this shot through shooting in to a mirrored surface?
Considering I am not 100% sure whether this is a reflection or a shot of someone else holding a camera it's a difficult one to call, because of the softness of the detailing on the outside edge of the lens I tend to think it's a reflection so overall you have done pretty well in testing conditions. I might consider pushing the ISO and so achieving a faster shutter.
You've managed to pull out the colour in the building which is reflected in the lens pretty well, there's not really much I can see wrong with the processing as I think you would have been very limited in what you could achieve from the original image.
To be honest I think had you taken a creative image directly of the building in your shot you may well have got some seriously good results as it appears to have some wonderful tones and colours and also seems very interesting in construction, but I do applaud you for taking the plunge and stepping outside of your normal style, unfortunately being different on DPC can yield some very low scores, that's not necessarily a bad thing it just means that your style and what the voters want do not meet, for what it's worth I was one of your 5 scores.
Good luck in future challenges!