"In every task that must be done, there is an element of fun," sings Mary Poppins and, for the most part, that's true. Writing can and should be fun, and, even when it might seem a chore, if you can find that spoonful of sugar, it can be a real joy.
Please read sections 23 and 24 of Part IV of the Zinnser book and any other section that looks interesting to you. Comment here on anything you found here that will help you make that already-great chapter of your book even better--and any attitudes toward writing that will make writing more fun for you.