Would recommend "Heirloom Sewing, Essential Techniques... Class" where it is explained how to create and sew on a curved border. I did not have a pattern for this. The skirt comes from the whole wide of the fabric. For the blouse I try out to help me with measuring an non-elastic shirt and shorten it to the waistline. Unfortunately it comes out too short, so I add two green borders to reach the necessary lengh of the blouse, this match with the border of the skirt.