Machine wash cold (on "delicates" if possible) with like colors
DO NOT use Fabric Softener
Lay flat to dry
Again... straighten out the pleats WHILE THEY'RE DAMP and it will be much easier to iron when dry.
The mill (that weaves the fabric) says dry cleaning is OK, but I NEVER recommend dry cleaning as the chemicals used tend to take the teflon coating off the fabric.