I helped a student teacher out with a Drafts related query over on the Automators.fm forum. I’m posting a link here as it had some useful bits and pieces in it, and I figured it might be useful to have a cross-reference in the Drafts forum.
Just converting Markdown didn’t seem to be enough to do the job - the formatting didn’t look to permit that. It utilises a standardised input structure, template tags, HTML output, and a Shortcuts custom shortcut to generate a PDF at the end of the process.
Hope folks find it useful.