Pressing is an essential part of garment construction. There are differences between pressing and ironing. Pressing uses an up-and-down motion of the iron on fabrics like wool, while ironing uses a sliding motion on washable fabrics. Good pressing maintains the fabric's texture without shine or marks and prevents wrinkles. It is important to use the proper temperature for each fabric and test unfamiliar fabrics. Pressing creases out before sewing ensures accuracy.