Starching your fabric before cutting it can help stabilize the fabric and prevent it from stretching. It can also help you achieve more accurate piecing. You want your pressing table/board to be harder than a standard ironing board. A soft table will cause issues when trying to press your fabric. Use a DRY hot iron (medium-high heat), no steam, preferably 1600 watt or more. Always put the side of the fabric you sprayed with starch down toward the pressing board and press the dry side with the iron. (don't worry about getting starch on your pressing board). Starch your fabric in layers, using very little on each layer. I usually starch mine 2 - 3 times on each side.