This has a moodiness to it that I like , the comp is good , a tad grainy , nothing that a little edit couldn1t take care of..This would look even better smoothed over some.
I like it the way it is. I don' think you need to smooth out the graininess. It's obvious that you had to run at a higher ISO due to the light levels. In this case I think it adds to the lonely feeling of the picture.