Stuck on a visualization?  Try this data visualization checklist!  Also has a tool for scoring stuff according to its method.  I don't think ya should totally enslave yourself to methods like this, but it can be useful
https://datavizchecklist.stephanieevergreen.com/

The first rule of Good Documentation is...you do not talk about Good Documentation
https://www.oreilly.com/ideas/the-eight-rules-of-good-documentation

Yay maffs, yay amateurs
https://www.quantamagazine.org/decades-old-graph-problem-yields-to-amateur-mathematician-20180417/