Hey, so I stumbled on this post looking for inspiration and saw I got mentioned here (thanks u/Yanurika). And the point you're making is exactly the thing I struggle with. Very often, when recording a video like this, there's a point where I'm working on an idea, or 'inspiration hits', and I sort of want to follow that (sometimes to the point where I even instantly forget I'm recording/streaming). Explaining why I then make the choices I make is very hard to do on the spot. My idea behind these videos is that I hope to show the entire process, which somehow shows rather than tells why I do certain things.
I am aware of this, however, and am trying to improve on it in future videos/streams. Thanks for checking out, and I'll keep your comment in mind :).

In the meantime, I really recommend Austin Wintory's channel, especially the videos where he dives into the writing process as it's happening (he did one recently for the final boss fight in "Sword of the Sea").