It always take me longer than I want to get back to you. I'm sorry for the delay.
I really appreciated the video you made. I can tell that took a ton of time and energy to plan and execute, and the content is impressive.
Here are a few quick thoughts.
First, you're right, your voice overs need more energy. I know how hard that is, but keep at it. Warm up for an hour if you have to before you actually go live with your recording. It's like anything else in that getting loose and in your groove will help you be on your A game.
Second, I love the visuals and the explanation of the actual physics behind what you're teaching. That's fun and interesting for me. I'm a little torn on this though, because even though I liked that, I could see how it could wear a casual viewer out.
Third, and related, there's always a way to tighten up your edit, and this could use it. Everything is useful and I can see why you wouldn't want to part ways with any of it, but tighter would be better with a video like this - especially because the voice over is good but very deliberate. My church building video was over thirty minutes long after the first edit, but I had to part ways with lots of details I cared about to make it energetic and short enough to be watchable and sharable on the Internet, and the truth is, it's still too long at nine minutes.
That relationship between high-energy and total run time is a key part of the formula for good YouTube content (obviously content-value is most important). The more energy your presentation has (and by that I mean delivery, pace of editing, style, visual excitement, etc.) the longer you can get away with it being. Which brings me to my next point.
Fourth, right now your visuals are informative, but low-energy. I don't know how many of those you're making vs. borrowing, but if you can come up with stuff that more interesting than a simple image against a white background it will keep people more engaged.
Fifth, the content is just plain good. You know a lot about what you're doing. It's inventive and fun, and it will appeal to engineering nerds as well as little kids who just like having fun with LEGOs. I've never seen anything like what you're doing here, and I enjoyed it.
Take care,
Matt
