An International Correspondence Schools instruction paper on twill weaves and how they are designed on design paper, with practice questions. It covers the construction and repeat of twills, regular twills and their bases, twill angles, and derivatives made by rearranging or combining ends and picks. It goes on to fancy, entwining, curved, skip, pointed, diamond and diagonal (shaded) twills, with many drawdowns and chain and drawing-in drafts.