A lot of information here from gaffer Julian White about the use of light in night scenes, the use of practicals etc. We find his thoughts and implementations around the topic silhouette particularly interesting. It is not always necessary to put the main motif itself in the light. An illuminated background that generates a silhouette can sometimes be more effective (and even simpler):
Clever also the intensification of the light output of Practicals by openings in the back of the lampshades etc. - also the question asked here, which colour moon/starlight actually has - actually blue? as in many films (or rather "grey"?) we find interesting ...
more infos at bei youtu.be