They permit the book cover's look to get seen from several angles. Moreover, if you can find any design issues, the designer could make timely changes and quickly preview the adjustments. Save time and money from selecting a graphic designer— only go with a template, drag and fall design things, https://whitemagicstudios.co.uk/blog/5-things-to-do-when-self-publishing-a-book-in-the-uk/