I know you will think this is the very best book you have ever read! Just before we look at it, I should say that I am a real author describing a real book — this letter pretends that this book is a first novel and I have no track record in the industry.
Example of a Query Letter Dear Ms. Our one universal piece of advice about querying is to keep the letter short. Happy writing, and good luck! Don't lay it on too thick. Books that are too dissimilar.
Not just that course.
Your hook should show agents how your book is different from the thousands of others in your genre. Remember that getting third party editorial advice is the standard way of improving your work.
Did you add every thing into that query that you should?
What else have you published? Agents know that most slushpile submissions will be by complete newbie authors.