Night Shooting

As I couldnt sleep tonight I thought that I would attempt to find to find tips to tackle the problem of lighting up the night - time scenes properly in the shot.
The main idea to make it seem more realistic was to create pools of light using torches and things so that it looks more realistic but you can still see the actors expressions.
I also had the idea of using several torches to give the impression of streetlights during the chase part of my scene.