 You can make a green shirt look transparent like this in a Zoom meeting, let me show you how. First, start an empty Zoom call, then click Start Video, and then Video Settings, uncheck Mirror My Video, and then Enter Full Screen Mode, and next get out of the way and take a screenshot of your empty background. On Windows, use the Print Screen key on a Mac, use Shift Command 3. Save that screenshot, and then choose Virtual Background, click Add Image, add that image that you just saved, and then click I have a green screen, and there it is. It looks like your whole shirt is transparent. If you don't have a green shirt, you can pick a different color. Also, don't move your camera or your background so that everything stays lined up. Unless you're Zach King, one of my former students, then you can get away with it.