He made a video to see how the car performed -- you and others felt a needed to play armchair director whereas I was more than happy to complement him!
Again, he didn't ask for complements. He asked for advice. If folks only post videos here for compliments, then they need to show them to their moms and leave it at that.
In the "for what it's worth department," I'm not an "armchair" director. I'm a retired filmmaker who owned and operated a video production company. Along with that, I also taught filmmaking on the university level--to both undergraduates and graduates. So odds are I have some insights into what makes successful films.