A good attempt at a macro with a message. Your composition and colours are good, but the focus needs to be a bit sharper. Also, although I think I know what you were trying to convey here, I feel that you perhaps needed some other element - writing on the marble or a gravestone background to really succeed.
I don't get the significance of this photo or how it fits this challenge. Is the marble a tomb or headstone? If it is, you should have showed more of it so we could see that and relate this to the theme of the challenge.