I have another question about the basic tank top pattern. I have had a long lay-off from sewing and I am trying to get back in using the basic tank top pattern again. I am having difficulty with the arm and neck bands. Before you attach the band, you have to fold it in half and make a line of sewing at about 1/2 inch from the raw edge. When you attach this to the main body of the T shirt, I cannot see how this first line and the new line of stitches do not overlap and/or are not visible when finish the neckline. Am I doing something wrong?