Organization
Think about the structure of your piece before you start to write. Create an outline to help guide you to where you want to go and the points that you want to make. As you begin to write, consider the order of your arguments. Ask yourself what will make the biggest impact. Most of the time, you’ll want to use your strongest argument first.
Flow
Provide as many road signs as possible, including transitions, topic sentences, and headings/subheadings.
Visuals
A solid page of text with no white space is intimidating and tiresome to read and can impede the reader’s ability to comprehend the document. Break up the text with headers, numbered paragraphs and spaces between paragraphs.
Succinctness
Eliminate nominalizations which are phrases that use an abstract noun instead of a verb. For example: give an analysis = analyze. Also, avoid negative constructions. Positive constructions are almost always shorter. For example: not allow = prevent.