|I use a pair of "clips" to trim. But I don't use them to make a clip the way most do on seam allowances, I fold the fabric so that the stitching line is at the point of the fold and then I clip OUTward, toward te seam allowance. That way there is never a danger of clipping to far. If the fabric is too heavy for the clips, I do the same thing with my scissors. You get a nice notch with one slip plus eliminate the danger of clipping too far!