I posted this to Reddit, and got lots of great suggestions. Posting this link here so I don't lose track of it.
Finally found the link (from 2 months ago!) where someone on Reddit recommended reading the man man page. Putting it here because I don't know where else to put it for now.
Also, I scaled the images in issue 002 and the pdf went from 3.6 mb to 1.3 mb. (2023.02.18)
I made a video about my proofreading process.