I ironed on my flower petals first, using Lite Steam-A-Seam2 as a bond, then I drew in pencil lightly the line of the stem. Using a running stitch in matching DMC floss (I am sure any matching thread will do) I hand sewed the ribbon over my pencil line. Then I ironed on the blue petals. I will finish the petals with a blanket stitch. It was very easy to manipulate the ribbon around the curves and it is only 1/8 inch (3mm) wide, so a single running stitch is all it needed.