Set up a smooth, evenly lit green background
Keep the subject several feet away from the green screen
Use separate lighting for the subject and the background
Avoid wrinkles, shadows, and reflective clothing
Position the camera on a stable tripod
Record at the highest quality possible
Make sure the subject does not wear green
Use a consistent white balance and exposure
Import the footage into editing software with chroma key support
Apply the chroma key effect to remove the green
Adjust key settings to clean up edges and remove spill
Add the new background behind the subject
Match the lighting and color of the subject to the background
Export the final video in the desired format