I use lots and lots of both starch and Best Press. Before I cut my fabric, I heavily starch it. I use a mixture of 2/3 Sta-Flo to 1/3 water. I put this in a spray bottle and spray the fabric heavily. I then put the starched fabric in a plastic bag which I put in the freezer until I am ready to iron. For me, piecing is do much easier with the stiff fabric. If I need to get out deep wrinkles or fabric fold lines, I use Best Press which I purchase by the gallon and pour into a small spray bottle. Nothing beats Best Press for getting out wrinkles!