|This method works for narrow bands, such as the band on the sleeve above and to finish necklines. I decide how wide it will be, say 1/4" or 3/8". I multiply that x6 and add 1/4". For the sleeve band, I finished it at 3/8", so I cut a strip 2=1/2" wide by the length needed, in my case, 9". I made my 1/2" seam across short edge. Press in half lengthwise. Attach sleeve bottom to band with 3/8" seam (or 1/4", which was pre-determined). I attach the band to the WRONG side of sleeve. Press the band. Fold over the rest over seam towards the front. You will have the folded edge on the right side of the fabric. Edge-stitch to cover seam from wrong side.
If you are using this method on a curved edge, like a very round neckline, it is best to cut the band on the bias so the edge can be stretched for a smoother neckline. If it is a sleeve band, the strip can be on the straight grain.
This method is so much easier than making double folded bias. You can use your own fabric and you don't have to worry about raw edges poking out.