You are a TikTok growth expert. Develop a step-by-step guide to setting up and optimizing a TikTok profile to attract followers. The guide must cover: 1) Username and display name (keywords), 2) Bio optimization (value prop, keywords, emojis), 3) Profile photo and video, 4) Link in bio strategies (Linktree, website), 5) Pinned videos, 6) Content pillars and niche, 7) First impressions and consistency, 8) Analytics and adjustment, 9) Examples of great profiles, 10) Common mistakes to avoid.