the second step. You need to add a flat hemisphere over the girl's head. The light usually comes from above. A flat hemisphere will produce a very directional stream of light. But this is not the end of the work. Moving on.
please note that in YAFARAY, you can cross the surfaces of walls and objects with hemispheres, this engine is very smart. If the power of the hemisphere is small (1%, for example, as in the first step), then the intersection line will not be visible. Therefore, I placed high towers with intersecting walls, this allows for a more even distribution of the soft light filling the room without worrying about spots.
