Love your efforts at making images of this at 10 in the night Saurabh - Best light for photography is bad light in my view
Wish you all the success for such experiments. Personally I think night feel is diluted in this image due grey scale conversion. Looks like about 2-stop underexposed daylight image. I suggest you retain it in RGB and add a bit of blue cast (it may already have blue cast since you made this at night - don't remove it !!) - I am sure that way it will look far better. Not sure what those tiny bright spots in the frame which seem to affect it a bit especially the one near eye - we can't expect every the way want in nature however...