Here’s an interesting set of recommendations about improving your writing through ‘conscious syntax’ that gets to the issue through a pair of basic sentences. I like it and maybe you will, too:
It is this rich variety of word and phrase order and variation in punctuation that makes prose — fiction or nonfiction — readable. As you review your writing, make sure that you vary sentence structure among these and other constructions to create a pleasant reading experience devoid of lockstep syntax — questionable enough for a Dick-and-Jane reading level, and deadly for more sophisticated readers.
This website also has many other valuable tips for those of us trying to improve our writing: