Ever opened a coloring book and immediately thought… “Wait. Why does this mermaid have five tails?” As a cartoon artist, I’ve learned the hard way how to spot the difference between high-quality coloring books and low effort, glitchy AI art. In this guide, I’ll show you exactly how to tell if a coloring book is AI-generated, what separates the best quality adult coloring books from the disappointing ones, and how to avoid low quality coloring books that waste your time (and your markers).