Book cover is the first impression that a book creates on its potential readers. A book cover design is one of the most important aspects of marketing a books. If the cover is unprofessional you will guaranteedly loose sales, so one must use a professional book cover designer for their book cover.
Writer of a book don’t write books, they write manuscripts. Designing a book cover is the process of getting an author’s manuscript into the hands of a reader, by materialising it – giving it a form. A successful book cover needs to make a reader ‘feel’ things rather than ‘tell’ them something.