When sourcing embroidery, the stitch density and thread tension are the primary indicators of quality. High-quality crafts should feature tight, uniform stitching without visible gaps or loose loops. For machine embroidery, verify the digitizing quality to ensure sharp outlines and smooth gradients. For handmade pieces, inspect the reverse side; professional artisans maintain a clean back with minimal knots. Additionally, ensure the fabric stabilizer used is appropriate for the base material to prevent puckering or fabric distortion after washing.