If you are wanting to create you own design for print, it is important to use appropriate software. Word processing programs and photographic image editors are not ideal and there are several cheap or free (Open Source) alternatives. Affinity Publisher is good and cheap, though not without its flaws. Xara make cheap, powerful and somewhat quirky software. Canva is an online print design service with a lot of good templates and graphic content. There is a free version and a paid for version. Scribus is a free page layout program. Inkscape is a free vector graphics program. Gimp is a free image editing program. All programs have good and bad points and require time and patience to get the best out of them.