natural one: we firstmust find something to say, then organize our material, and then put it intowords.
Finding something to say within a zettelkasten-based writing framework is relatively easy. One is regularly writing down their ideas with respect to other authors as part of "the great conversation" and providing at least a preliminary arrangement. As part of their conversation they're putting these ideas into words right from the start.
These all follow the basic pillars of classic rhetoric, though one might profitably take their preliminary written notes and continue refining the arrangement as well as the style of the writing as they proceed to finished product.