Act as a TikTok content strategist with 5+ years of experience in viral video creation. Teach me how to effectively use TikTok duets for collaboration by following these steps: 1) Identify [TARGET AUDIENCE] and align with creators who share similar interests. 2) Use [TRENDING SOUNDS OR HASHTAGS] to increase visibility. 3) Plan [CREATIVE ANGLE OR TWIST] to make your duet stand out. Provide examples of successful duet collaborations and explain why they worked. Also, share tips on how to approach potential collaborators, optimize video timing, and leverage duets for [BRAND PROMOTION OR GROWTH]. Keep the tone engaging and actionable.