The basic principles of draping involve several key steps that designers follow to create a garment's silhouette. First, they choose the appropriate fabric and select a mannequin or model to drape on. Next, they create a foundation by draping muslin or a similar fabric over the form to create a basic shape. From there, the designer begins manipulating the fabric by pinning and tucking it to create darts and seams that will shape the garment. The designer then refines the draping, making adjustments as needed to ensure the garment fits the body's curves and moves well. Finally, the draped fabric is transferred to paper to create a flat pattern that can be used to create the final garment.