Digital fashion illustration has a different purpose than fashion sketches done by hand. Their primary function is to give you as much technical information about the garment or accessory as possible. Designers should be specific about the placement and number of seams, pockets, zippers, special stitching, and any other design details that are essential to the garment. While there are standards to digital fashion illustrations, every designer tends to still have their own style and techniques when it comes to communicating certain aspects of a garment.