Use a straight-stitch foot and needle plate to keep sheer fabric from being pulled into the feed. Use encased seams for blouses, unlined jackets, lingerie or sheer curtains. They are also an excellent choice for children's clothes, because they stand up to rugged wear and repeated laundering. Self-bound seam begins with a plain seam. One seam allowance is then folded over the other and stitched again.
French seam looks like a plain seam on the right side and a narrow tuck on the wrong side.
It begins by stitching the wrong sides of the fabric together. This seam is difficult to sew in curved areas, so is best used on straight seams. Mock French seam begins with a plain seam. Seam allowances are trimmed, folded to the inside and stitched along the folds. The self-bound and mock French seam can be used in curved or straight areas.