Layout the dining room table as though you are expecting people to dinner. This gives an inviting appearance. Bedrooms are very close to the kitchen as far as making an impression. They need to be spotless, carpets cleaned, again flowers and a nice aroma will do wonders. Closets should be organized.
Mirrors placed in the right area can increase the feeling of space.
Try to store clothes you will not need for awhile. If you have louver doors, make sure these are working properly, and not sagging. This is what will be running through the buyers mind. The above may seem like a lot of work, and it is. Selling a house is hard work.