Layouts are another way to add branding to your e-book design, as they can help you organize and present your content in a clear and attractive way. You should create layouts that suit your brand style and your e-book format, and that are easy to navigate and read. You should consider the size, shape, orientation, and margin of your pages, the alignment, spacing, and indentation of your text, the placement, alignment, and size of your images, icons, and logos, and the use of headings, subheadings, lists, tables, charts, and other elements. You should also consider the responsiveness and adaptability of your layouts, especially if you are publishing your e-book in different formats or for different devices. You should test your e-book on different screens and platforms to ensure that your layouts are compatible and functional. You can use tools like InDesign or Calibre to create and edit your layouts for your e-book.