This collection of 30 simple Celtic knots are intended to be a relaxing exercise in shading. Their outlines are easy to follow but still slim enough to disappear into the image if so desired. The simple easy to color patterns are a great starting place for anyone interested in designing their own Celtic tattoo. For the most part the knots were pulled from Celtic manuscripts and cleaned up using vector image editing. No AI was used to create this book. The author is terrible with computers and only learned how to make celtic knots in gimp so that she could use them in her quilt patterns. Each page is 8.5 x 8.5 in (21.59 x 21.59 cm) - The pages are single sided to avoid bleed-through - Please remember to put a protective sheet behind the page you are working on.