It's simple. You can delete it by clicking on the little X on the bottom right side, next to your username, on the image page.
For better explanation, go here: link
It was a picture that was already uploaded by you. I have a great collection of my own, but now I'm gonna explore the eyes on this page first, before I add any... so there won't be doubles... Thanks very much.
This link "linkwas a picture that was already uploaded by me, I was trying to delete as deleted all other images about that fairies in my "Panel de Pon" club, the same image about the Thiana went wrong, maybe I'd try it by clicking in this little "X" in the bottom's right side, and later next to my username, on the image of Thiana from "Panel de Pon", would you help me there soon?!