Hand sewing takes time that most of us do not have. A blind stitch is available on many sewing machines .... learning how to use it saves you hours of hand sewing. Controlling a machine blind stitch can be almost as invisible as a hand sewn blind stitch.
As always your sewing machine manual is the best resource to learning how to use any feature on your sewing machine. This guide does not replace your sewing machine manual and is meant to compliment the information available in your sewing machine manual.
Turn under or prepare the raw edge as if you were going to hand sew the hem.