Steps to change children's special effects video: 1. First, turn on the vibrato short video. 2. Search the topic of decreasing potion in the search bar, and click to enter the first topic found. 3. Click to participate at the bottom of the topic interface and shoot with a small potion effect. 4. After shooting, click Send Now.

Baby special effects search: 1. After entering Tik Tok, click the search icon above. 2. Enter "Baby Special Effects" in the input box and click "Search". 3. Click on "Baby Special Effects" at the bottom left of the video. 4. Click the shooting icon to enter. 5. Cover your face with your hands first, and then click the shooting icon to start shooting. 6. After the shooting is completed, remove your hand and instantly lengthen your baby's appearance. After shooting, click the check mark. 7. Add children's songs about the baby and click "Next". 8. Have a good title and click "Publish".