Can't help you much in the DR of this image but like what reaper had pointed out, exposure is under. Can I also point out that you should at least clean up your image prior to posting.
By including the branch of leaves on the upper right hand side and the bit of roof on the upper left hand side, it leave the viewers to conclude that you're a sloppy photographer.
And not to mention that cut off seat of the motor cycle on the bottom left hand side.
Compositionally, by inclining to show the street light, you were compelled to show more of the sky. The color mixtures and tones of the alley would had been a more preferred choice to show to the audience rather than the sky. Sometimes it is good to take a stroll around the scene a few times before choosing on the best viewpoint
Overall, a ok shot but nothing spectacular.
A image that really doesn't spark much interest, despite its potential.
Hope you don't mind me mucking around with your image.
This is rather what I would to see....
Say the word and I would remove it.