but I got a bit carried away and never explained exactly what a facing is or why you should use one.
A facing is a small piece of fabric that is used to reinforce a neckline or sleeve opening, and finish the raw edge neatly. You can think of it as a small piece of lining, but it pretty much keeps the neck or armhole of an outfit from getting stretched out of shape. If you’re a beginner to sewing, you are probably thinking “Eh…I can skip these.” (I know I used to think that!), but trust me, learning this simple skill will definitely improve the look of your garments. It’s an easy way to make your finished projects look much more professional!
If you don’t want the row of top-stitching to show on the outside, you can sew the
facing to the seam allowances along the top edge instead to keep it hidden.
The same steps apply for armhole facings as well,
but please feel free to let me know if you have any questions.