In this class, we explore several body variations that impact the fit of sleeves, from arm size and shape to shoulder joint differences. Understanding these variations is key to achieving sleeves that not only look great but also fit comfortably and allow for full range of motion. We'll focus on Seam Method Alterations that target the sleeve itself, as well as adjustments that also involve the armscye (armhole). Through demonstrations, we'll show how these alterations improve fit, maintain the intended style of the sleeve, ensure a smooth, flattering drape, and enhance both comfort and mobility. By the end of the class, you'll be confident in applying the Seam Method of Alteration to create sleeves that fit beautifully and allow for effortless movement, no matter your body shape.