Packaging
The title makes one clear promise and the video keeps it. The thumbnail reads at phone size and does not repeat the title word for word. Both have been compared side by side with the last three videos so the channel still looks like one channel.
The file
Audio levels are consistent from start to finish. Captions are checked by hand for names and numbers. Chapters are in the description with the first one at 0:00, and every link in the description has been clicked once.
After it goes live
Watch the first minute on a phone. Pin a comment that adds something, not one that asks for engagement. Note the date so you can check retention a week later and learn one thing for the next video.