The first banner uses a zig zag stitch on the edges (I use a double layer of felt so the pennants have more body and hang better) using black thread. I strung the pennants on a simple black ribbon, but dressed it up with strips of ripped, striped Halloween fabric. It's casual and fun and very festive!
Here's the whole thing:
The next banner has medium sized ric rac sewn in between the layers of felt so that just half the trim is sticking out. I used a straight stitch and black thread. Then the pennants are tied together using three different colors of ribbon. I love how the fabric with the little looped edges mimics the look of the ric rac. This method was a little more difficult, but I think the classic, fancier look is worth it!