Hm. It looks like this was shot about a half hour after sunset - maybe more - because of the UV in the sky, and the exposure on your subject's back. Your light source appears to be a street lamp, by the way it's hitting the trees and the front of your subject. The color temp of the light is warm, making it look oddly like sunset light - so, I have to tell you, as a viewer, I'm a little confused. Feels like Day for Night. It's the street light that's weird - and it diminishes the candle light coming from the bags.

I don't think the issue is sharpness - there will always be problems at 400 and above (although becoming less each year). And your blacks look pretty black to me. Try pulling the exposure down and playing with the color temp.