I tried to get a 30 yr. old granddaughter to sew. It made her very nervous and hot.LOL. So I said just sit here and sew these 3x42 strips together many times to see what the machine does and how pretty the stitches are. And I left. Pretty soon here she came. Oh, I'm gonna make my girls new dresses. Just so excited. I gave her a sewing machine to use. That did it. I told her if you mess up, just start over. It's okay. Just keep going. Later here she came again. She had sewn right down the MIDDLE of the strip.LOL It takes a long while to impress on the seam allowance I think.