This is how you get really smooth, lovely satin stitches. Outline in split or chain stitch, fill in the area with chain or long & short stitches, and then do the satin stitch. The underlying stitches support the satin stitch and help it to lay smoothly.
DIY Ribbon Sleeve - Take an old sweater, cut a slit in along the shoulder down about Fold over raw edge and sew in place. Sew a piece of ribbon about long to one side of neckline and another ribbon to the other side of the neckline Tie together