Go look up a tutorial on narrow bias strips as used in a Celtic design. Ours were 3/8" and if you had a good machine, you could zigzag them on. I've couched a lot of embroidery and using a couching foot an triple couching shows up really well.
There are also the 1/4" iron on strips of trim that you can make or buy and couch those.
http://www.equilter.com/product/578/...ias-tape-black
There is a way to add double adhesive to your own fabric to make this.