What's with this silly obsession to compose blurbs for books that don't exist yet? If you're still writing the book, it doesn't require a detailed description, nor does it require a catchy title, nor does it require a flashy cover. When a team of builders come together to construct a house, they don't quibble over what colour the front door ought to be before they've laid the foundation and put the roof over the walls. If the book hasn't been written, then it doesn't need a description. What it needs is for its author to finish writing it, then to proofread it thoroughly, then to edit it for clarity and conciseness, then to revise it so that it flows well, then to refine it so that it's polished and streamlined and then to rewrite it all over again so that it's better than ever. Once you've done all of those things, you can sit around and tweak your little blurb to your heart's content, but until then, you ought to shelve tinkering with such trifles and start getting serious about the actual composition process.