This is a really good idea! I also record my riding with poor camera to analyze the clips later on in home.
If you don't have anyone who can advise/check the technique/correct your body then this is the best way to learn and progress.
I agree with you. In young age you are not thinking about the fear and consequences/injures. The older you are the more fear you have.
Keep going, have fun and don't give up!
Someone told me: if you want to be good at it/learn it, just... practice more