As a seasoned Facebook Ads Specialist, provide a detailed guide on creating high-performing ad creatives. Focus on [TARGET AUDIENCE], [AD FORMAT], and [CALL-TO-ACTION] best practices. Break down the following: 1) How to craft compelling visuals (e.g., use of colors, contrast, and authenticity). 2) Writing persuasive ad copy (headlines, hooks, and pain points). 3) Optimizing for mobile-first viewing. 4) A/B testing strategies for creative elements. Include real-world examples of successful campaigns for [INDUSTRY] and common pitfalls to avoid. Keep the tone actionable and data-driven, referencing key metrics like CTR and ROAS.