The first two weeks of a new listing are crucial. Make sure you are available for questions and offers.
Double check that you've notified any tenants and have their consent in writing for showing their unit and that you've talked about both of your expectations.
Do you have pets? Have a plan for your pets to get out of the house during showings to reduce their stress.
You may even want to have a current building inspection available for potential buyers to know the details of your home before they offer.