Set up a green screen backdrop without wrinkles
Make sure the screen is evenly lit
Keep the subject several feet away from the green screen
Use separate lighting for the subject and the background
Avoid shadows on the green screen
Avoid wearing green clothing or reflective items
Position the camera and subject before recording
Record at the highest quality possible
Use editing software with chroma key support
Select the green color with the chroma key tool
Adjust key settings to remove the background cleanly
Refine edges and reduce spill if needed
Replace the green background with your chosen image or video
Export the final video in the desired format