Hi Foregolf,
I am a retired engineer, native (UK) English speaker, who has tried to play golf all his life :-)
However, I do believe I can write authoritatively about the subject.
A good command of the language, as well as acceptable knowledge of punctuation and the like, qualifies me for your project, I believe.
If you wish, I could rewrite a test section of your text before you finally decide.
I look forward to receiving your further instructions and, hopefully, working with you on this project.
Best regards,
Doug Lumley