Write a newsletter growth strategy in a {{tone}} tone for a {{industry}} newsletter targeting {{target_audience}}. The primary goal is to {{goal}}. Focus on Pinterest. Output must include: Overview, Prerequisites, Step-by-step Plays, Metrics to Track, and Troubleshooting Guide. Each recommendation must include a specific metric or benchmark. Maximum 1800 words. Use markdown headings. Use plain language understandable by {{target_audience}} with no prior experience. If a data point cannot be confidently estimated, skip that section. Ensure all recommendations are specific to {{industry}} and {{target_audience}}. Paste any relevant background information after these instructions before running.