To Use Green Screen Technology, you have to make a green screen background by painting a wall green or covering it with cloth. If you are using fabric, you need to mount it to the wall using glue strips or liquid nails. After that, light the green screen separately from the subject to eliminate hot spots. Then, ensure the subject does not wear anything with the color green. Next, Place the talent far enough away from the green background to create separation between the two. Forth, light the subject to eliminate shadows. Last, Shoot your footage and then load into your editing system for the background change.