I just took a quick glance at this from work with no audio. My observation may be useful from this different perspective. The video is 4:18 long. There are three short 5 second action clips (two of them being identical). The remaining 4+ minutes are video of a guy talking. I don't even know what the topic was but kids young and old require a much higher ratio of visual demonstration and less talk. Even if he was just talking about what he was going to be presenting in the future, still need more visual to hook the audience.
Looks like he does have good energy and enthusiasm. Good luck to him with the project.