To start the PDF ebook creation process, choose Ebook as your book type during the Start step in your project. 

At the Design step, upload your PDF as you’d like it to appear for your customers. Make sure that all fonts are embedded, and that each page in the document is the same size. 

Then, upload your desired image file to the Design step as a JPG or PNG image.

Proceed through the rest of the steps and input all the information that you’d like to add. Finally, use the Review step to make sure everything looks okay to you before you finish your PDF project.