A house usually shows better with furnture and some accessorites in there. It tends to make a home seem warmer and more inviting.
There are staging services and now a days, Realtors are very good at doing so too. You don't need to spend tons fo money, the furniture does not have to be expensive and you can rent furnitures. If you use a stager, their price often include furniture. Add some pictures, pillows, small rugs, lotion bottle, towels in the bathroom. All makes a house show nicer.
But most important, make sure there is fresh coat of paint, neutual color, make the house show brighter, especially in this gloomy winter (yes, even in our sunny California); have the house professionaly cleaned even in the smallest space - grout, basebord, window sill, garage, shelves, etc. Just make the house looks good and presents better.
Your Realtor can also give you input on what other things need to be done to the house and yard to fit the neighborhood and the buyer mentality, and most importantly, how to price and market your house!
Make sure when you go into the home, you want to buy it too.
I am not sure if you need to go out and buy