Of all the things authors get blamed (and sometimes praised) for in their books, the covers are where we have the least control. I’ve had people tell me what I should have the publisher put on my books instead (yeah, I’ll get right on that). I’ve even run into people who assume I draw the covers myself. If authors are lucky, we get asked what ideas we have for the book covers. If we’re really, really lucky, the publishers consider the input we give them. I recently caught up with young adult fantasy authors Holly Black and Sarah Rees Brennan during their book tour, and they shared some fun stories about book cover development. Even as a bestselling author, Holly Black doesn’t get to dictate what goes on her covers, but she did get to attend the photo shoot for her most recent release, White Cat. The cover has a picture of a dangerous-looking man in black leather holding a white cat. Holly said she was surprised to learn that the cat used for the photo shoot wasn’t a “professional” model cat who was accustomed to being in that environment. The cat was the pet of someone who worked at…