As you might not know, I was asked by Arcen Games (the makers of AI:War, A Valley Without Wind and Tidalis) to make the official tutorial videos for AI:War (you can find them here
Since then, I've improved both my "acting" and my technical equipment (real studio microphone, puff filter, proper soundcard, more advanced recording gear) so you could expect something of significantly better quality.
Those videos above are, tbh, rather "lazily" done. It's just a "hop into the game, record while playing without script". If I'd do a proper tutorial, I'd make a script and take my time to re-record and cut out parts that don't work (a lot of "err":s and "umm":s for instance) and similar.
If you need anything like that, send me a PM with your ideas.