FACT: First Impressions Matter
Framing the shot: Get wide
Fit as much in the shot as possible: most easily done with a wide angle lens or gymnastic lessons.
Framing the shot: Get lower
Try and get the lines even, done by bringing the camera down lower than your typical eye-height.
Nobody knows the home better than the homeowner
This is your client's home and your client's stuff, the best pictures will come from clients that participate in the preparation of listing shoots.