Great advice. I so agree that there are numerous writers here on Medium that could use a refresher course on the grammar and punctuation and vocabulary of the English language. You, my friend, have made it into my weekly "The 5 Best Pieces of Writing Advice I Discovered This Week" article.
I have one formatting pointer for you. First, a question: Is "To Make Your Writing 'In English' Waaaaay Better" your subtitle? In order to make it look like that in the Medium program, you can highlight the words and click on the smaller capital "T" in the bar that come up. It will then tell you that you made this a subtitle, and it will appear before your name instead of after, and your picture will appear as a feature image.