Wow, that's amazing!
You put lots of thought and consideration into your art, that's a really good skill to have. I like there is a reason for many things in your artwork. Keep it up! And great job on the study of the hand,
Recently I've actually started watching an anime called 'Magi - Labyrinth of Magic', and in it there is a little boy who attracts butterflies(for lack of a better explanation). In a recent episode, they explained that they had something to do with spirits and souls, and at first I thought that the author had made it up or something. But I didn't know it was actually true :O That's really cool, I like this concept of butterflies.