I just sewed the sequins on with plain black thread and then interlinked them by layering the sequins. To do that, follow these instructions. First, push the needle through the sequin hole, then push the needle through the fabric next to the sequin edge. Pull it back up through the fabric and add another sequin. Now, take your needle and push it back through the original sequin hole. Now, push your needle through the fabric so it comes out at the edge of the second sequin. I will post pictures to help.