Mermaid Ankle Wrap 1

This is sort of an updated version of a design I did a while ago I might like to get a mermaid tattooed around my right ankle someday (the piece where the mermaids tail reaches down the lowest would be right above my ankle joint facing out), but I have to design it and it has to be perfect! You might have noticed the dozens of mermaids I have in my gallery and that's because I'm never quite satisfied with how they look. I measured around my ankle, took some old sketches and added the best parts (her hair, her figure, her tail, etc) arranged it, and traced it on bristol board. When I finished I really liked it, but I got up and did some other things, came back and I thought it looked pretty bad. This one is not completely done, there are still a lot of things I want to change, like it that bubble around the big mermaid I want it to say "Siren" but I didn't get that done.

Any advice?