Your dress is short, do you want to lengthen it or refashion your dress? There is a very simple sewing tutorial.
How to lengthen dress:
It is necessary to take a strip of fabric, the length equal to the length of the bottom of the dress.
The width of the strip is equal to the width, on which you need to lengthen the dress. We process the cut of fabric. If the fabric is knitted, it can not be handled. Strip the fabric sewn to the dress.