Quality evaluation should focus on three core components: Fabric (Aida cloth), Thread (Floss), and Pattern Accuracy. Ensure the fabric is 100% combed cotton with clear, consistent grid holes and stiffened edges to prevent fraying. For threads, prioritize Egyptian long-staple cotton or mercerized polyester-cotton which offers high tensile strength and colorfastness (Grade 4 or higher) to prevent bleeding during washing. Patterns must be printed with eco-friendly, water-soluble ink that disappears completely after soaking, with a high-resolution symbol-to-color ratio to reduce eye strain for the end-user.