Over the years, I have written several articles to serve the advance of expository preaching. Here are some of those.
Why Expository Preaching is the Power for the Pulpit: https://thirdmill.org/magazine/article.asp?link=http:^^thirdmill.org^articles^mik_milton^mik_milton.EP.html&at=Why%20Expository%20Preaching%20%20is%20the%20Power%20for%20Pastoral%20Ministry
Pathway to an Expository Sermon: https://michaelmilton.org/2016/09/10/pathway-to-an-expository-sermon-a-building-block/
Sequencing Sermons: https://michaelmilton.org/2018/06/16/sequencing-sermons/
Five Ways to Make Sure Your Sermon in Not Your Idea: https://michaelmilton.org/2018/04/19/five-ways-to-make-sure-that-your-sermon-is-not-merely-your-ideas/
Rubric for Expository Preaching: https://michaelmilton.org/2016/12/03/expository-preaching-rubric-homiletics-class/
A First-person Expository Sermon? https://michaelmilton.org/2020/05/26/a-first-person-expository-sermon/