It's hard to review work from a professional tech writer. I'm under the
constant impression that I'm ruining somebody's perfect end product,
making a fool of myself.

If it makes you feel better, it's a mix of definitions I wrote that Roger proofed and restructured, ones that Jürgen had written for a separate effort which then got a Roger-pass, and then some edits of my own and some by Jürgen which I merged without consulting Roger.