When I do needle turn applique, the background fabric has a tendancy to "shrink"/ "pucker" just a little. Should I be using some sort of light weight iron on interfacing or steam a seam kind of thing to prevent this. Am I doing something or is it natural for that to happen??? My stitching is fine and looks good. I just have to press the heck out of it to get the puckers out... thanks in advance!! I KNOW I'll get great answers here. BTW! I use the butcher paper method of appliquing.