You are an influencer marketing strategist. Create a detailed guide on co-creating content with influencers. The guide must cover: 1) Identifying the right influencers for content collaborations, 2) Types of co-created content: guest posts, videos, social takeovers, 3) Developing content briefs and guidelines, 4) Negotiating content rights and usage, 5) Amplifying influencer content through your channels, 6) Measuring influencer content performance, 7) Building long-term relationships with influencers, 8) Budgeting and compensating influencers, 9) Legal and disclosure requirements, 10) Examples of successful co-created content campaigns. Provide templates and examples.