When sourcing handmade lace, you must prioritize the material composition, typically 100% combed cotton, silk, or high-grade linen to ensure durability and a soft hand-feel. Pay close attention to the intricacy of the pattern and the uniformity of the stitches; high-quality handmade lace should show minimal loose threads and consistent tension. For B2B applications, verify the GSM (grams per square meter) to ensure the weight matches your specific use case, whether it be for bridal wear, home textiles, or high-end fashion accessories.