A query letter is a short introduction to your manuscript and a way to help a publisher decide whether to read more. It should be clear, specific and tailored to the press.
Begin with the title, genre and word count if requested. The pitch should introduce the main character, the situation that drives the story and the central conflict. Focus on what makes the premise distinctive rather than trying to summarise every subplot.
A short author biography can include relevant writing experience, publication history or a connection to the subject matter. You do not need to invent credentials or apologise for being new.
Keep the tone professional but natural. Avoid exaggerated claims such as calling a manuscript the next global bestseller. Let the premise and sample pages make the case.
Before sending, check the publisher's submission guidelines. Some use forms, some request email submissions and some ask for additional materials. A well-targeted query shows that you have taken the time to understand the press.