A legal-writing blog that I follow recommended Matthew Butterick's Typography for Lawyers. (Ray Ward's blog is called the (new) legal writer.) One of the publishing conventions that lawyers don't follow is to put one space between sentences. Every magazine that you read and all the authorities recommend using only one space instead of two. Our habit of putting two spaces after a sentence is a dated typewriter practice that creates rivers of of white space when using a computer. Compare some of your work with one space and see if you can tell the difference.