I love mermaidsSeriously, I do not know SVTFOE very well, but I like the characters and I think Star as a mermaid is an awesome ideaThe way you drew her looks really good to me! I love the fins for her ears. The hearts on her cheeks are a nice little detail, and the lines for her nose create a different but nice looking noseMy favorite details though are her shell necklace and how her hairstyle looks. You did great with them!