Fringe on a scarf?

[lower-class.livejournal.com]

Forgive me if this seems like a dumb question, but I saw someone who had put fringe on their scarf the other day, and I want to add fringe to the scarf I made for my mom.
I have never done it before, so I have no idea if there is a special way to do it...or do I just tie the yarn to the end of the scarf?
I am using Lion Brand Homespun yarn...It will make pretty fringe.
Thanks.