A great match! And both photos deserve a prize, but... which one is better, at least in my humble eyes?
"Melancholy Mood" is beautiful, but the title says it all: she is melancholy, and that means, she is stationary, in her own sphere, deep in thought. As stunning as she looks, this picture leaves me locked out.
"Mermaid Fantasy", in contrast, shows a beauty, arranged dynamic, engaging the viewer, with an open look, plus the pose breaks the distance between middle ground and fore ground, and her curved back adds dynamic.
That Mermaid wins this match, to me.