Always keep written arguments simple, plain and effective. It is better not to write like an articulate lawyer. Rather it is always well paying if you try to make the note simple enough in such a way that a stranger could read and understand it.
Use a style which is clear, concise and focused. Use language that is active, all-inclusive (covering every aspect), and visual (that provides a mental picture) in such a way it gives the readers a vivid picture of the things with colour, context and action.
While writing the arguments think like a judge and then write them for the judge who is going to read and act upon it.