0gezzygezzyUmmm...be original! Something other than vampires! How about something like...well i can't tell you anymore because those are my book ideas.
0issueproblemofyoursLet me tell you now, whatever you do, don't give up. Don't change your ideas for anyone, and get a few people you can trust to check your work before presenting it to any publishing company. If your grammer is not done well enough, they will most the time trash your book proposal to the side. Be the fly on their wall that won't stop bugging them, and never let then tell you never. J.K. Rolling was let down by a lot of people, and look were she is at.
0beenboxGood luck, I agree with Issueproblemofyours, I want to be an author when I'm a bit older, I even have a book filled with loads of story ideas (Come up with 26 so far 😆 ) Well anyway you'd be surprised how quite it comes to you, perhaps you need some inspiration. Don't let anyone tell you its rubbish, feel proud of what you have done.
75GhibliMy only advise to you is, if its your book want to get published and be proud of, you have to think of the ideas yourself. It's much more satisfying to have something completely your own work rather than getting ideas from other people ;D
Try and stay away from the supernatural front for now, however, so no vampires, werewolves, angels or devils!