The Little Mermaid

So I FINALLY got the hang of drawing skin! Now, I just need to work on hair -.- Usually when I perfect one thing, another of my skill lowers. It's like God saying "You can't have everything". I started sketching a person, using a random girl for a model/test working with skin. Once It looked like I wanted to, I added hair, OBVIOUSLY red hair And then my pen slipped and accidentally drew a tail