Nice job capturing both the city and the fireworks. The street light at the bottom of the frame is over exposed enough that it pulls my eye a little bit away from the fireworks.
The fireworks look great. Too bad the foreground/city looks so bad in terms of processing. Just over-processed looking in general.
Next time, mask each separate from the other, and process independently.
Also a big issue is the firework bust in the building at the left hand side of the image. That's really really really distracting.
Overall though, I do have to say that the general composition is pretty strong, and with a bit more care in the processing, this could have been pretty stellar.