Saw the post a few days ago, forgot to watch/comment until today.
Nicely done. I'm not a bad player, and I still have a ways to go apparently because I would not wait as long as you would to green sometimes - I would call it quits on the deck-building at maximum double province myself with all-base games. Now I know.
You do a great job talking about what your deck needs at the time being, and what cards will immediately help you accomplish it. The quick pregame thoughts are helpful too when you discuss your opening and how you expect the game to go. I'd imagine it's tough to go from your standard commentary to beginner-focused, but it's done well.
Pointless nitpicking:
I think it's just as important to say what not to as it is to say what to do, so you could pay attention and comment some more on your opponent. You talk about some misplays, but you could go even further, and mention their specific decisions like them not 4-card-chapel trashing, opening Market over Sentry, etc. It would definitely help to slow down the card animations too. Going the other way, you definitely acknowledged them, but you can also really emphasize some of the cool combos like remodeling Provinces to end the game faster, how Poacher works really well with Library, stuff like that.
That's a lot to keep in mind, so don't worry about addressing all of it, just food for thought. Liked it a lot overall though, nice work!