I changed my mind about using Face Sensing blocks in my project, but the video feed is still on my screen. How can I get rid of it?

No problem! If you no longer want to use the Face Sensing extension blocks in your project, remove all of the extension's blocks from the script area (drag blocks to the block palette to delete). Make sure to turn off any stage monitors by ensuring all checkboxes are unchecked in the Blocks palette (next to blocks like "Face Tilt"), as well. Save your project. Then, reload the project by refreshing the browser or closing and reopening the project.