Clean out and dispose of everything you are not moving.
Package everything you won't need to use while trying to sell.
Make sure there is plenty of light on any stairs.
Consider painting the walls, or washing.
Repair cracks in the walls and floors.
Stack items neatly against walls to make garage look larger.
The kitchen should be bright and attractive.
Paint cabinets, if needed, put up or clean curtains.
Clean the ventilating hood in the kitchen.
If the kitchen floor is worn, consider replacing flooring.
Remove counter top appliances. Clean counters appear larger.
Make the kitchen smell good.
Repair dripping faucets.
Keep towels in the bathroom.
Use special cleaners to remove stains from toilets, bathtubs, and sinks.
If sink and bathtub drain slowly, unclog them.
Keep a deodorizer in the bathroom area.
Replace old caulking around bathtubs.
Have all walls in good shape. Cracks or nail holes are easy to fix.
Check ceiling for leak stains. Fix the cause of damage, and repair.
In painting or decorating stick to conventional whites or neutrals.
If you have a fireplace, clean it out, and lay some logs down.
Wash windows and replace broken glass.
Replace burned out light bulbs and use a brighter bulb.
Be sure every light switch works.
Make the floors shine, and fix any creaking boards.
Straighten up the closets by getting rid of any excess clothes.
Lubricate sticking doors, and cabinets.
Caution: As a home owner you are required to disclose any material defects you are aware of to any potential homeowner. Never attempt to conceal or hide a potential defect as this would violate state law.