Read and sketchnote or write a response. Put on Medium and add to publication. https://gamedesignconcepts.wordpress.com/2009/08/13/level-14-playing-with-non-designers/ (Links to an external site.)
Playtest with people. This may help https://cardboardedison.com/playtest-groups/ (Links to an external site.) Don’t forget to take pictures for final documentation!
You notice I did not assign 13, but clever people will chose to read https://gamedesignconcepts.wordpress.com/2009/08/10/level-13-playing-with-designers/