The best practices for social media advertisement include: 1. understanding the platform and its specific features 2. defining clear objectives for the ad campaign 3. targeting the right audience 4. creating visually appealing and engaging content 5. testing and optimizing the ads based on performance metrics 6. leveraging each social media platform's unique characteristics 7. incorporating interactive elements to encourage user engagement 8. staying up-to-date with the latest trends 9. maintaining a consistent brand voice 10. monitoring and responding to user feedback