What is a common practice to achieve a neater finish in sewing?

Understitching is a sewing technique that contributes significantly to achieving a neater finish. It involves sewing the seam allowance to the facing or the lining to ensure that it stays in place and does not roll to the outer fabric. This is particularly useful when working with facings, as it helps prevent the facing from peeking out from under the garment. By keeping the facing securely attached and in position, understitching enhances the overall appearance of a finished garment, providing a clean and polished look.

While practices like pinning, basting, and folding are essential parts of the sewing process for various reasons—such as holding pieces together during construction or ensuring proper fabric alignment—understitching specifically helps with finishing edges neatly and is crucial for structured garments. It adds to the durability of the construction and gives a professional touch to the finished item, which is why it is considered a common and valuable practice for achieving a neat finish in sewing.