How to win light in your house
Enlarge the holes: If it is possible and the house estructuta allows, it's easier to win is to extend daylight windows. If this is not possible, please note that you can also change the woodwork for a narrower grid boxes and avoiding the blinds.
The staircases and skylights: poorly lit areas, like hallways or buardillas, get pretty good with a bit of overhead light. A skylight or a window as prefabricated roof are two good solutions.
Fireplaces light: If the room has no direct access to the outside but is near a terrace or roof of the house, you can place a stack of light through mirrors, will light up any corner.
External Resources: A balcony or porch with a clear floor and white walls, without too much furniture that impede the passage of light and a selection of plants is a source of light for the interior.
More clearly: Try to keep clear of obstacles natural light sources: avoid placing vases or decorative objects high in the windowsills.