Lighting the scene

I've used the Three-Point Lighting approach in the scenes which is similar to how tv shots are set up.

The lights I've used are:

Key light - Target type outside the window simulating sunlight and creating a slight shadow

Fill light - Omni type over the scene in a similar position to a lightbulb in the room

Back light - Omni again placed behind the scene to reduce the dark areas cast by the key light

Where neccessary, the lights were moved for close up shots to reduce dark areas.