Excellent advice on writing that first chapter! It gives me a lot to consider, especially when talking about POV. Currently, my novel shifts from present to past throughout, but I've already been struggling with this. The article makes me question my plot and how to make it flow more smoothly and still keep the important elements in the plot and conflict. A complete revision of the novel might be necessary - daunting and frustrating, but necessary.
Check it out and see if you couldn't tighten your work. Good luck!