This is a Companion Workbook for The Perfectly Fitted Shirt Pattern. Learn how to adjust your pattern for a perfect fit using a fit muslin. Start by picking the best size to work with and sewing a Fit Muslin. You will use the Fit Muslin to determine how to adjust your pattern. There is a detailed worksheet to help you keep track of your pattern adjustments. Easy to follow step-by-step instructions for a variety of common problem areas such adjusting the length of the shoulder, the position and fullness of the bust, and adding ease.