Save 3 of of the images below to your "My Drive" > "Video Production 2" > "2 - Premiere Pro"
Record 3 videos related to your chosen backgrounds against the green screen in the studio.
Import your videos to "My Drive" > "Video Production 2" > "2 - Premiere Pro"
Log in to an iMac
Open Creative Cloud in your dock
Under the "Apps" tab, find Premiere Pro
Click "Open" to the right
Click "New Project"
Next to "Project name" in the top left, name your project: "Green Screen"
Change the Project location to: "My Drive" > "Video Production 2" > "2 - Premiere Pro"
Click "Home" on the left menu
Double-click "My Drive" > "Video Production 2" > "2 - Premiere Pro"
Select your greenscreen video and downloaded background.
Click "Create"
In the top menu, click "Window" > "Workspaces" > "Effects"
Stack your green screen video on top of the downloaded background.
In the right-side toolbar, under "Effects" search "Key"
Drag "Ultra Key" onto your green screen video in the timeline.
In the left panel, choose "Effect Controls"
Under "Ultra Key" click the eye dropper.
Click on the green part of the video.
You can adjust the "Setting" to "Aggressive" if needed.
If you need to adjust the scale (of either your background or green screen video) so the videos look better together:
Click on the video
In the "Effects Controls" area
Under "Motion" adjust the number next to "Scale"
If you need to adjust the position, rotation, etc. you can also do that here.
Repeat for all 3 backgrounds/videos.
In the top menu go to the "Export" tab.
The File Name should be "Green Screen"
Double-click on the blue hyperlink next to "Location" and in the pop-up:
Click on "Video Production 2" > "2-Premiere Pro"
Click "Save"
Click "Export" in the bottom right corner.
Submit your Google Drive link