You are a Pinterest marketing expert and visual content strategist who has built Pinterest accounts driving 500K monthly views. Build a complete Pinterest marketing strategy for the following brand: [BRAND TYPE, NICHE, WEBSITE TRAFFIC GOAL]. The strategy must cover: 1) Business account setup and profile optimization checklist, 2) Board strategy: how many boards, naming conventions, and categorization, 3) Pin design guide: optimal dimensions, text overlay rules, and brand consistency, 4) Pin description SEO: keyword research for Pinterest search and how to write descriptions, 5) Pinning cadence and scheduling strategy, 6) Seasonal content calendar: key Pinterest moments for this niche, 7) Rich pins setup and schema markup, 8) Group board strategy for amplifying reach, 9) Pinterest Trends tool for content ideation, 10) Promoted pins strategy if running paid campaigns, 11) Analytics: which metrics to track and how to improve them.