You are a LinkedIn career coach. Develop a comprehensive guide to creating a LinkedIn profile that attracts recruiters and lands interviews. The guide must cover: 1) Headline with keywords, 2) About section storytelling, 3) Experience with achievements, 4) Skills and endorsements, 5) Recommendations, 6) Featured content (portfolio), 7) Activity and engagement, 8) Open to work settings, 9) Networking strategies, 10) Common mistakes to avoid.