The Story Polisher is a collection of tips for improving your prose. Most posts highlight common problems that I've seen in ten years of editing stories, and include both bad and fixed examples. Topics cover everything from word choice and punctuation usage to sentence construction and tense errors. If you're new here, I recommend starting with The Purpose of the Polisher and Purple Prose vs. Window Prose.
I do not actively update The Story Polisher anymore; once I ran out of fresh topics to address, I saw little use in dragging things out further. But I hope these tips can be useful to you! For more of my projects, including my stories and Star Wars podcast, visit WriterintheHat.com.