If it's mild enough outside - that is, if it's cool enough in warm weather, or warm enough in cool weather - you might think about opening up the windows.

This will bring the fresh air in, and will be wonderful for making the air breathable, and getting rid of any "home" smells that you may not even notice, but may be obvious to the prospective buyer.

Be careful about the temperatures in which you open the windows. If you make it too hot or too cold inside, then the prospective viewers will feel uncomfortable, and therefore won't attach themselves quite as well.

Moreover, a too-cold house will take away from the welcoming feeling you're trying to instill in the home, and a too-warm house will make the house feel smaller than it is, and will make the prospective buyers want to leave faster. Naturally, that's not what you're going for.

Clean, Clean, Clean

When people look to buy a home, they're being extremely picky and observant about every little thing. That being said, you don't want to lose a sale just because you have a cobweb in a basement window.

Therefore, it's a good idea to go over your home with a "white glove" to ensure that it is spic and span. Pay special attention to elements such as:

Dust
Cobwebs
Trash
Grunge