I keep getting two completely different thoughts when I look at your pics. One part of me is thinking, "Wow, this is like a modern twist to Snow White!" But then I think, "No, this is more evil queen..." So needless to say I'm a little confused, but totally love your pics either way!
Stock has a more of a "use me" tone than photography would. Photography invites an image to be looked upon as a finished piece of artwork, more than something tagged as stock. It's still a lovely picture.
I think that most stock is pretty bare, so that people can build off of it. I do agree that this looks like a finished work but I am sure someone could do something really creative with it, or add a background, etcetc. I actually saved it so I can do just that.