You can use the Post Your Own Game scripts, using only the Introduction field, to have a more flexible header system. (When the fields other than Introduction are empty, the headers are suppressed, and you can include your own.) You can't select Piece or Piececlopedia, but we (the editors) can change that after. (But if you want to put it in the Piececlopedia, you'll need to ask Fergus whether he'd prefer/insist on a static html file instead of script submission.)
@KelvinFox, for a Piececlopedia article (and useful advice even for ordinary Piece articles), see
https://www.chessvariants.com/piececlopedia.dir/guidelines.html
You can use the Post Your Own Game scripts, using only the Introduction field, to have a more flexible header system. (When the fields other than Introduction are empty, the headers are suppressed, and you can include your own.) You can't select Piece or Piececlopedia, but we (the editors) can change that after. (But if you want to put it in the Piececlopedia, you'll need to ask Fergus whether he'd prefer/insist on a static html file instead of script submission.)