A simple mistake. Why else? Thank you for being another person to point it out, but I don't need to be reminded. I caught it after upload, and I tend not to backtrack on artwork I deem finished. It's already taught me to pay more attention to which way my hands are going.
I like the bright orange colors, but the blue-green towards the end doesn't seem like it belongs and blends into the background. Maybe just a different shade of blue, green, or purple so it stands out from the background?
I love the costume! Fish-net variants look so good on mermaids, imo.