I pinned all elements onto the template in real size. Then I drew with the marker the needed connecting lines. And then using the lines I crocheted the chains.
Edge is crocheted in 3 rows. First row are chains. Second and third rows are single crochet stitches or double crochet stitches. Pattern is best used from some kind of fabrics, but paper will be fine too.
The eBook doesn’t have a pattern for the large mermaid!