I use a combination of the other methods mentioned. I tear the fabric a little wider than what is called for. I press it, fold it ( I try to only fold once ) remeasure and cut to the size I need. I tear it into strips first because doing that reduces the bulk and the weight of the fabric and it is easier to handle. After I fold the strip - I press the fold - that helps reduce the chance of getting the "curve". Then I press it flat again after I cut it to size. ( A little water along the pressed fold line will get the crease out. ) I hope this helps. :)