Im not sure how to set it up so the light is shining down the stairs leaving a semi circular patch at the bottom, as if the door is left open in the top room.
( i will be putting an object in that light at the bottom )
the walls will have a green peeling paint texture and the stairs and cellar made of stone. the angle will be some 1 on the stairs looking down to the bottom and light should be that pool fading out into a pitch black cellar, with a musky light on the walls of the stairs
This SS shows the patch of yellow ( elegantly done in paint ) wear the light shud end. the light should shine on the walls too with a dark musky effect.


Thanks =)