Handstitching refers to the process of sewing by hand, which is a traditional technique that has been used for centuries. Of course, there are many synonyms for this word, depending on the context in which it is used. Some possible synonyms for handstitched might include handsewn, handcrafted, handworked, or even hand-woven. Each of these words captures the essence of the artisanal process involved in creating a garment or accessory, whether it's a handcrafted leather bag or a hand-woven scarf. Ultimately, the choice of word will depend on the specific product or project being described and the desired tone or style of writing.