I cut some felt to fuse to the back side of one of the belt pieces. I wanted to give the belt some body, a soft, thickness (but not too thick) that I could stitch on. I quilted the belt piece that had the felt fused to it. Just some diagonals across the entire length of the fabric. Then I cut two long pieces of ribbon and pinned them to the two belt pieces, right sides together (ribbon tucked inside). Does that make sense? Here are some pics.
I stitched around the whole belt but leaving a section unstitched so I could turn it right side out. I pressed the whole belt, pressed the opening, folding the extra fabric in, so there were no exposed edges of fabric, and top stitched around the whole belt. Then I took two small quilted leaves that I already had, some felt, a button, and a pin back, as well as my trusty glue gun and made the little pin. Here it is finished.
And another pic with the dress. I like it. If I were to make it for me I would probably make the ribbons long enough to wrap all the way around my waist and tie in the front. Similar to an obi belt.