Here is the link to the tutorial: http://www.blogforbettersewing.com/2010/06/magic-of-horsehair-braid-little.html
Check out how she applied it to the RIGHT side of the fabric....
This is the picture of the completed project using the horsehair braid for the hem:
The link to the completed project that she used the horsehair braid is here: http://www.blogforbettersewing.com/2010/06/twirl.html
Have you used horsehair braid for a hem before? Any tips and tricks to use it?