Pin the fabric just below where your bottom will be in the mermaid tail.
Grab the multicolored tulle and begin layering them to add volume to your mermaid tail. To sew the tulle tufts onto the tail, take the needle and thread and pull it through the center of the tulle layers and sew it to the inside of the dark sequined fabric.
To make the tail extraglamorous, sew on a few extra layers of tulle. (Tip: Sewing tulle under the front of the tail makes it easier to walk.)