Each platform has its own language and rhythm—tailoring your video’s length, visuals, and sound for each platform is essential. For Instagram and Facebook, focus on mobile-first design with shorter, highly visual content. Use subtitles for silent autoplay and engaging first frames to capture attention. On YouTube, where viewers expect longer content, focus on story-driven narratives and more detailed explanations of your cause. Pro Tip: Always optimize for mobile—even on platforms like YouTube, where a significant portion of views come from mobile devices. This means clear text, easily readable graphics, and fast loading times.