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Book Proposal Services

Turn Your Book Idea into a Publisher-Ready Proposal That Sells

For Aspiring Authors, First-Time Writers, and Busy Professionals who want to get their book published, without the stress of writing a compelling proposal that impresses agents and publishers.

Why 250+ Clients Trust Us:

  • Award-Winning Proposal Writers – Specializing in non-fiction, memoirs, business, and self-help books.
  • End-to-End Support – From concept development to final edits and agent submission.
  • Unlimited Revisions & Adjustments – Until your proposal meets industry standards.
  • Publishing-Ready Delivery – Includes competitive analysis, chapter outlines, and marketing strategy.
Get Your Free Book Proposal Consultation Now

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Why Choose Our Book Proposal Service

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Proven Strategy for Agent & Publisher Approval

We offer a proven strategy for agent and publisher approval, creating custom book proposals meticulously tailored to your genre and goals.

  • Non-Fiction & Business Books

    We craft persuasive overviews, incisive competitive analyses, and compelling author platforms. This positions you as a definitive thought leader in your field, making your proposal irresistible to publishers.
  • Memoirs & Personal Stories

    We expertly highlight emotional arcs, universal themes, and clear market appeal. Our proposals are designed to deeply attract publishers by showcasing the unique resonance and commercial viability of your personal story.
  • Self-Help & How-To Guides

    We structure your content with crystal-clear chapter outlines and emphasize undeniable reader benefits. This approach powerfully demonstrates the value and market readiness of your self-help or how-to guide.

Format-Specific Expertise

We offer specialized proposal types meticulously tailored to your unique needs, ensuring your project is presented in the most effective way:

  • Traditional Publishing

    For authors seeking agent representation, we create a complete proposal package, including compelling sample chapters, designed to capture the attention of literary agents and major publishing houses.
  • Hybrid Publishing

    For writers who want professional support but also control, our proposals are paired with expert self-publishing guidance, giving you the best of both worlds.
  • Business & Thought Leadership

    For experts building authority in their field, we craft proposals focused on positioning you as a go-to industry voice, showcasing your unique insights and market impact.
  • Academic & Research

    For scholars and educators, we ensure your proposal adheres to peer-reviewed formatting and citation standards, meeting the rigorous requirements of academic presses and institutions.
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Complete Publishing & Marketing Support

We offer comprehensive services to ensure your book proposal is robust, compelling, and ready to impress agents and publishers:

  • Competitive Title Analysis:

    We conduct thorough research on 5–7 comparable books in your genre, clearly demonstrating how your unique manuscript stands out in the market.
  • Chapter Outlines & Sample Chapters:

    We write compelling summaries for each chapter, alongside 1–2 full, polished sample chapters that powerfully showcase your unique authorial voice and writing style.
  • Marketing & Platform Strategy:

    We include a detailed media plan, outline your social media presence, and highlight potential speaking opportunities. This demonstrates the strong marketability of your book and your proactive approach to reaching readers.
Get Free Book Proposal Consultation

For Aspiring & First-time Authors

Proposals That Open Doors

Writing a winning book proposal can be overwhelming. We specialize in guiding first-time writers through the entire process. Many new authors struggle with:

✓ Understanding what publishers and agents look for. ✓ Crafting a compelling overview and target audience section. ✓ Writing sample chapters that stand out. ✓ Turn your expertise or story into a professional, market-ready proposal. ✓ Increase your chances of landing an agent or book deal. ✓ Focus on your message while we handle the publishing strategy.

Get Your Free Expert Guide Today

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Our Happy Authors

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"I am so very happy to have my new friends at Cosmos! Janet is my aspiration and had helped me throughout my publication! I am so very happy! First it was Kathrine who dealt with me and forwarded me to Janet, and Janet introduced me to the most intellectual person called Zachariah, whose inspiration drove me into writing another book! I am still in the process of writing the new book that will be titled Truth and if my present book of Time is running out and becomes a success, it will be all due to Cosmos and I salute the team of Cosmos." -

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Thayil Nair

"Writercosmos has recently re-published my first novel of fiction and are half-way through publishing the second, with a third book waiting in the wings. The team looking after my manuscripts has been excellent, with great knowledge and keenness and importantly, great patience. I have been especially impressed with Associate Manager, Janet Millar who has made my journey so far really enjoyable. Her regular communications and updates are especially appreciated and her level of friendliness, helpfulness and patience outstanding, promoting my great confidence in the Company."

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Dr Michael Heath

"I had a great experience working with Writercosmos on the publication of my first book. The company met all the deadlines we agreed on and showed both patience and professionalism throughout the process. A special thanks to Janet and the team for their guidance, support and encouragement along the way."

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Keith Edmondson

"Janet and the crew are a hard-working group of people. They made all the revisions I requested and displayed patience and resilience throughout the project. They also guided me throughout the entire process. I am not sure they had done a Christian book before, but they strapped up their boots and dug in. We had a few failures to communicate, but that is to be expected. However, the most crucial part is that Janet and the team did not abandon me! She encouraged me to the end. However, this may not be the end, as we may work on another project together in the future. Who knows?"

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Dwayne Evors

"Every single member of my writer cosmos team not only acts totally professionally at all times, the individuals are clearly the best in the business of book publication and sales!!! Alex paul is by far the best project coordinator i have dealt with in fifty years of doing business!!! The rest of the team led by vincent, janet, katharine, michelle and zachariah are fantastic in Absolutely every respect at what they do!!"

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Paul

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Book Proposal FAQs

A clear concept, strong author platform, competitive differentiation, and well-written sample chapters.

Yes — we have writers specializing in health, finance, parenting, spirituality, and more.

Absolutely — we specialize in personal stories with universal appeal.

Yes – all clients receive weekly updates and direct communication with their assigned expert.

Yes – we’ll draft an overview and chapter outline so you can assess the fit before signing on.

We use Publisher’s Marketplace, Amazon, and industry reports to identify trends and comps.

Yes — we analyze your existing content and conduct voice-matching interviews.

For multi-book authors, yes. Our VIP package includes annual refresh cycles.

Marketing Related Services

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Manuscript Review

Receive comprehensive, expert feedback on your current manuscript draft, gaining valuable insights to elevate its overall quality and impact.

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Social Media Marketing

We promote content across platforms. Posts and campaigns are tailored. We expand reach and grow audience. Build your author brand community.

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Book Marketing

Develop and execute strategic launch plans and promotional activities designed to achieve maximum visibility for your book in the market.

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Author Website

Establish your distinct author brand and effectively showcase your work by building a professional and engaging online author portfolio.

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