I am still working away, slowly, on my jacket. I have now sewn up the seams and have to decide whether or not to cut the edges and then sew a blanket stitch around them all. That is what Raewyn recommended. She said to sew it from the back so that the stitching is not too obvious but still gives an attractive edging. It will work as a sort of embellishment.
Some of the embellishments that are on the jackets were added as the felting process happened but some were added on at the very end.
Crochet could be added as a further enhancement along the edges but I don't think I have the patience for that.