Create a comprehensive plan for launching a new fashion line, starting with identifying your target market and ending with the creation of line sheets. Consider factors such as branding, design, sustainability, and marketing. Develop a detailed target market persona, conduct thorough market research, and create a visually appealing moodboard to guide your design decisions. Design a variety of garments that align with your brand's aesthetic and offer mix-and-match options. Finally, create a professional line sheet.