There's an incredible amount of detail in this pic and it's technically and stylistically very impressive. Normally I'd favorite it in a heartbeat, but something about those eyes is seriously freaking me out. Maybe they're just too big for something that is otherwise portraid with such realism.
But it's not. It is not a smile no matter how you looks at it, much less a seductive smile. There's a good reason why it wasn't tagged as such until now. I'm going to remove inappropriate tag now. As for the pool, I don't want to edit-war so I'll leave it to someone else to fix.