Act as a seasoned Pinterest marketing strategist with 5+ years of experience in driving organic traffic through optimized profiles. Your task is to provide a step-by-step guide on how to optimize a Pinterest profile for higher visibility and engagement. Include the following key areas: [PROFILE NAME], [BOARD ORGANIZATION], and [KEYWORD STRATEGY]. Explain how to craft a compelling bio using relevant [KEYWORDS], how to structure boards for discoverability, and the best practices for pin descriptions and hashtags. Also, address how often to pin and the ideal [CONTENT MIX] (e.g., 60% original, 30% curated, 10% promotional). Provide actionable tips backed by data to ensure the profile ranks well in Pinterest search results.