It takes a week or two to design preliminary front cover concepts. Once you select a concept, the revision process begins. Perhaps you like the overall design, but want a different font or color used in that design. Once you approve the front cover design, we'll finish the spine and back cover design. This can take an additional five to seven business days—sometimes longer if there are significant revisions. Finally, once you approve the final cover design, we'll create publishable cover files for all applicable formats and for all the channels where Bublish distributes books (ebooks, paperbacks, hardcovers, audiobooks), including Amazon, Apple Books, Barnes & Noble, Google, IngramSpark, Kobo, and Lulu.