I'm not the creator of this picture but I'm pretty sure that if you're going to publish your book, you can't use it. If you post it on a website or something then I think you can use it, but giving full credit to the creator.
I wasn't going to publish it on anything, I just make books for fun and never publish them XD I just wanted to ask permission. Also, I wasn't going to use the picture, I was going to use the description XD