The pale background was bothering me, so I deepened the color, and added some ornamentation to the swimsuit. I think it's probably fine like this, but...

For the finishing touches, use a luminescence layer + fairly large airbrush to make the parts where the light hits shine.

I also took the opportunity to make the sea in the background shine, and added thin hairs on a new layer, and it's done.

I also took the opportunity to make the sea in the background shine, and added thin hairs on a new layer, and it's done.