Don't close them unless that is what you do when you are home. Close and lock garage doors and windows. Ask a neighbor to occasionally park in your driveway. If you leave your car at home, park it as you normally would. Vehicles parked outside should be moved occasionally to appear that they are being used.
Secure storage sheds, attic entrances and gates.
Consider taking valuables to a bank safe deposit box. Tell your local police you plan to be away. Patrol officers may have the opportunity to periodically check your home. Operation I.D. This simple step will allow your stolen property to be identified and returned to you if recovered by the police.