Remember to
ANSWER THE QUESTION that you were asked
Use a clear and simple layout with headings for each section
Write in a formal and impersonal style ( but take in to account you usually know the person)
Use bullet points if writing out long sentences will be too long for the word count
Total word count should be 220 - 260 words (Don't write too few or too many words)
Start the proposal with a clear sentence that states the purpose/aim
Finish your answer with a final sentence that is a summary of your opinion (based on what you have previously written)