Semi custom beach scene

*other photos are examples of other beach scene ones I've done
I've had this piece partially painted for months now, and just had an artist block on how exactly to finish it.  So now YOU can tell me! This 12x24in piece is available as a semi custom with you telling me what you want as the focal...a mermaid family, a mermaid laying down, a turtle, both?  Up to 3-4 mermaids can sit on the beach here(:  
12x24in thick edged stretched canvas. Ready to hang.