That's usually how I go about things too. It's annoying that a lot of the new crop of youtube programming videos skip these steps. I've seen a few "How to write X using Y" videos that basically write the whole thing from top to bottom one line at a time.

https://www.youtube.com/@JustForFunc and https://www.youtube.com/@fasterthanlime are good exceptions to this. I want to see the process of building out something complicated one bit at a time, including all the mistakes and dead ends.