There’s nothing wrong with covering your camera, but it’s probably not worth the effort.
Are you curious what might happen if a hacker was in control of your computer? The question really is “What can’t they do?”
Sure, you can cover your webcam with tape. But that won’t solve the real problem… you’ve got malware on your computer!
The bottom line is – avoid malware. Do all of the things you know to do to keep your machine safe and malware-free and you will also keep your webcam secure.