Ok, ive been creating a stair case leading down to a dark cellar for my friend. Ive got the modelling done, but im struggling with the lighting, big time.
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 =)