Using the neckline of the classical blouse base pattern (or any other base pattern) as your starting point, learn in this technical file how to construct the Roll collar. As its name suggests, this collar extends above the neckline and then rolls to varying degrees, depending on the fabric and how much fabric is extracted from the base. The process might seem complex but the file’s step by step explanations and detailed sketches make the method easy to follow for a precise and quality result in a predefined size of your choice. This base can be used for many other transformations. The following technical files can be used to complete your work: The technical file of the classical blouse base pattern The technical file of the blouse sleeve base pattern The technical file of the simplified sleeve.