I need a design with transparent background for 12 ebooks

I need a total of 11 magazines and 1 book, all with transparent background. A total of 22 pages.
I need 5 magazines to have three pages, one cover page, one left page, one right page. Template is provided.
I need 6 magazines with one page. Template is provided.
I need 1 book with one page. Template is provided.