1. Open the Tik Tok application on your mobile phone and click the "+"button in the lower right corner to enter the shooting interface.
2. Select the "Special Effects" function and find the "Dynamic Sticker" option.
3. Search for the keyword "lying down" in the dynamic post, and multiple related expression packs will appear.
4. Select an expression of a villain lying down that you like, and click Apply.
5. You can adjust the size and position of the expression to ensure that it is suitable for the scene you want to display.
6. Click the record button to start shooting video, and edit and add other special effects according to your own needs.