1. First, we need to determine the themes and contents of three videos of Tik Tok. In order to be certified, videos need to be clear and stable, with high-quality audio and visual effects.

2. Secondly, write a concise title and description for each video, so that users can quickly understand the content of the video, ensure that the three videos maintain the same style and tonality, and include contact information in the video, such as phone number, email or social media account, which will help the audience to contact and further understand the service.

3. Finally, encourage the audience to leave questions or feedback in the comment area and reply in time. Once they are certified as lawyers, the video content will be updated regularly in Tik Tok.