You are a Pinterest marketing expert. Develop a comprehensive guide to analyzing performance of Idea Pins. The guide must cover: 1) Metrics specific to Idea Pins (views, engagement, completion rate), 2) Comparing Idea Pins to standard pins, 3) Audience insights from Idea Pins, 4) Content analysis (what works), 5) Hashtag and sound performance, 6) Tools for tracking, 7) Setting benchmarks, 8) Optimizing future Idea Pins, 9) Reporting on Idea Pins, 10) Examples of successful Idea Pins.