Helpful Video to Get Started: https://www.youtube.com/watch?v=UKDxk7nf5BQ
How to Create a Bitmoji Background in Google Slides: https://www.youtube.com/watch?v=UKDxk7nf5BQ
Your actual avatar HAS TO be first created on a smartphone using the Bitmoji app. Once you create the bitmoji on your phone, then you can access it using the Bitmoji Chrome Extension in your browser. (Then, helpful tip, if you are looking for different standing poses of your avatar with no additional text or art, type the word "pose" in the bitmoji search bar.)
FREE Virtual Classroom Templates: https://www.dropbox.com/sh/58qbrtps9908472/AACLi9NEmfkNaSIzj5TBoRUqa?dl=0)
Go to "Google Images". Select "Tools"-->Usage Rights--> Creative Commons to find copyright free images. Then click on "Color" --> "Transparent" to find background free images to put into your bitmoji classroom. (see screenshot below)
Save the image to your computer and go to Remove.bg. Click Upload Image and poof - your background is gone. You may need to do a bit of adjusting to remove parts of the background that were missed. If so, click the Edit button below the original image. (It's free!)