Plain English Guidelines: Keep sentences short Over the whole document, make average sentence length 15 to 20 words. Muddle is more likely in a long sentence, unless the construction is simple and well-organised. Learning to cut repetition and verbiage, using lists and headings properly, and shortening sentences can make the world of difference to your …
Plain English and short sentences (less is more)
Some words add nothing but length to your prose.
Ascension Editing 