here's a youtube link to guide you. If you're attaching the sleeve before the binding, it helps alot, but it's also possible to do it afterwards with a little more hand sewing. I display small wall hangings using a small dowel stick through the sleeve, rather than a "rod," and cut the sleeve about 1" shorter (on both sides) than the width of the quilt. That way the rod doesn't stick out from behind the quilt,so it doesn't have to be decorative. You just rest the dowel on two small nails (or mug hooks) in the wall, hidden behind the quilt. a 30"x30" may be a little too heavy for this but I thought I would share.
http://www.youtube.com/watch?v=O2w3QPfNGM4