It is, as the song says, nice work if you can get it. And if you get it, won't you tell me how?

Well, I get it; developers keep asking me if I'd like to write more.

Basically, like nearly everything else in this world, it's a case of being not what you know, but who you know. And being prepared to get enough runs on the board to get noticed.

I've found that it also helps to ask people who are in a position to know such things if there is any writing available. After all, by me asking docredfern to ask bruceb if he had anything going did I end up working on the GW PHB. By asking Bruce to ask Geoff Grabowski (the Exalted line developer) the same question, I ended up getting an Exalted gig.

Then, because I did good enough work for both guys did further work come my way from them :)