Green screens are everywhere even if you've never actually seen one.
That's kind of the point.
It's been used in movies to bring practical effects and computer-generated graphics together, as in this VFX reel from Baz Luhrmann's 2013 film "The Great Gatsby." It's also used in television news, specifically when meteorologists deliver the weather forecast with moving graphics in the background.
If you're wearing the same color as the green screen, you can even disappear into a scene.
First off, you need to get your videos together. I found the video for this lesson through Pixabay, though their options for green screen footage are limited. You can find more on Shutterstock, but you'll need to crack your wallets open to use any of their videos.
If you'd like to have the checkered background, click on the checkered icon at the bottom of your composition window.
That's it! All you need to do now is add a background image or video.
However, you'll need to do a bit more work to make the presents look as if they're part of the background. For example, you might consider the lighting conditions for the video or image. If it was shot under an incandescent light, you have to add a Tint effect to your green screen footage so the presents appear more orange.
It goes without saying that, as journalists, we shouldn't mislead the public by altering news footage. But, if you're going to make a personal video, why not set it to an explosion?
Have a great October!