I either spray with starch or I "soak" the fabric in starch, then I hang it up and let it dry with a fan on low blowing on it, when I get around to ironing (ya know life happens just as soon as you start doing something) I just use steam, and it allows the fabric to be stiff yet it softens it enough to get the creases out. I read one time that you can spray your fabric and then fold it up and put it in a zip lock bag for 30 minutes or so. then pull it out and iron it, this will keep you from getting starch flakes on your fabric!
I stear clear of spraying as I go to avoid scorched starch/fabric.