Face: 

(Imagine bioluminescent spots along her cheek and necc)

Tail and arm fin things:

Top: 

(Instead of that green/blue crap, it's just bioluminescent stripes (like a lionfish) over black padding)

(And also it doesn't have that chain thing at the bottom, and the flowers are just seaweed) 

HERE YOU GO MY BROSKI, THIS IS CROA'S LOOKS