I am a sophomore engineering major and had to do a video on the law of conservation of angular momentum. Can someone tell me how accurate my project is? I did my best but I’d like to know if I really know what I’m talking about or not.

I am a sophomore engineering major and had to do a video on the law of conservation of angular momentum. Can someone tell me how accurate my project is? I did my best but I’d like to know if I really know what I’m talking about or not.