You have so many choices with surface cording! You can use the same fabric as your garment, or change up the colors with store bought or handmade cording. Make your own with this Surface Cording Tutorial, which also shows you how to apply cording on a garment. For the Peony dress you can go any direction with cording, simple loops or fancy designs. It would also look really cute to apply the cording on the edge of the sleeves.
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