There are several ways to create an ePUB file, depending on your needs and skills. Here are some options:

1.Use software to create an ePUB file: There are many software tools that can help you create an ePUB file. Some examples are Sigil, Calibre, Adobe InDesign or Scrivener.

2.Convert another file format to EPUB: If you already have content in another format, you can convert it to ePUB format using a conversion tool. Calibre offers such a conversion feature.

3. Hire a professional ePUB creator: If you don't have the time or skills to create an ePUB file yourself, you can hire a professional ePUB creator to do it for you. There are many companies that offer this service.

4. Have your Word file converted by Feiyr: If you have your eBook as a Word file, we can convert it to the necessary ePUB format for you. Once a month we can do this for free, any further conversion will incur a cost of £29.99.

Regardless of the method you choose, you should ensure that your EPUB file contains the necessary elements such as title, author, table of contents and formatting to ensure a high quality end product.