Bedroom Lighting.

I got the model from 3drender.com.

I started off with light value study. This gave me a clear idea on where light and shadow

must fall. It also helps me decide what all lights to use

and where all to place it. 

Then i gave materials and textures to the mesh. For this lighting exercise, 

I used physical sun and sky, portal lights which will light up the room.

And some more lights to give specular for the objects

and I also used light linking. 

I also used render passes such as Ambient occlusion,

irradience, specular and diffuse. 

And at last for the rays i used parti-volume material and infinite light.

Then I had to composite it in Photoshop to get this output. 

:)