I didn't tag my story Dark Agenda (but did tag it Character of Color). It's a story set in a source fandom about black African people written by a white African man (No. 1 Ladies' Detective Agency), and even though I was writing a culture not my own, I was doing so from the perspective of the original author, rather than of the actual characters (that is, I attempted to pastiche the original, rather than write a genuinely Botswana-based story), and it just didn't feel to me as though it really answered the challenge. I mean, I wasn't writing in a source in which all the characters are CoC because I wanted to reach out of my tiny white Jewish female box - I wrote in a source that I love, and it just happens that all the characters are CoC.

As far as "tips and tricks" go, I found suitable names for my original characters by looking up the Botswana football teams.