Before you take a picture, if possible turn off all the lights. Pull up the shades, tie back the curtains, and shoot before four in the afternoon so that the sun isn't too low. Natural light makes everything look crisper, brighter, and so much better.
The right angle
Take a trial photograph of each space you want to feature, and examine the image on the camera's preview screen. (Would a vertical shot be better than a horizontal one? Are there any cords and wires poking out? Is there way too much clutter?) Critiquing photos on your camera may help you notice problems.
Photograph your space at an optimal angle! Take wider shots from a kneeling position to make the room look bigger (rather than getting a lot of floor or ceiling in the finished product).
Avoid These Eyesores
Never ever feature any items that says just regular people live there on daily basis. Laundry, toys, even extra furniture can all contribute to a cluttered, chaotic photo. Instead of seeing your amazing dining room chandelier, buyers might not be able to draw their eyes away from the stacks of mail and magazines on the table, family photos on the fireplace and all the coats hung up on the backs of the chairs. Take the time to clear up clutter and avoid shooting ceiling fans, toilet insides, your reflections in the mirror, and your pets or kids as a matter of fact.