You should put it in a loop so it doesn’t just snap back to the beginning

The colours look great. Everything is that kind of translucent vaguely blue, so it looks underwater. And I just like that kind of minimalist art style. Not sure I get the way the hair is moving, though, and the light, while looking good, doesn't quite make sense. My best guess would be that it's like a cloud moving exposing the sun to the sea, but it doesn't quite move like a cloud. Overall the good definitely outweighs the "bad".