I think most of the primary issues with this photo have been covered in the comments you have already received. The contrast does feel very weak in this image for the type of shot it is. It almost looks like it has been 'lightened' with the brightness tool in software. The other issue that probalby hurt this photo is that there is still light in the sky. Based on the comments I have read in this challenge, a lot of voters expected a 'night shot' to be done well after sundown rather than at dusk where there is still detail visible in the sky....
I think this shot would look a bit better if the contrast was increased a bit. You may loose some detail in the coconut palms, but it would take out the smokiness of the image.
this image is perhaps a tad too light, or low contrast. It also seems that it was taken with a long delay, with a sligh breeze in the air, creating what seems to be camera shake... which i imageine is not. I think the biggest problem with this image is the range of shades of black to white.... it seems very middle grey.
This is a great subject for this challenge, but the photo needs a bit more contrast to make it pop a little more. Nice job picking such a good location to shoot.