Cover Art

I finally finish my art to put onto my story. But what's this? I work my tail bone off trying to get this picture up, again and again I try. Why wont it go up? UGH!!!! I've been trying for two days now! Why wont it go up? I've saved it in diffrent ways, created accounts on websites, EVERYTHING I CAN THINK OF. I even tried to get someone else to do it. But it still wont go up! This is my cry for help.... please help.