I find that making them a little bigger than they are suppose to be helps me. They get distorted sometimes because of the bias and I use starch and make sure I press, not iron. But making them 1/2" to 1" larger helps me also. Triangles on a Roll are a dream to use, but you have to buy the correct size for each project and that can be spendy. But I've done it just because it simplifies things so much. It's worth it to me!!!