The second method is better. Compose the memo in Word. When you are finished, highlight the entire document and copy it in the Edit menu. Access Grits and enter the Compose section. This method is easiest.
Email sometimes makes people chatty, casual, inappropriately informal, and sloppy.
You want the instructor to think you know what you're doing. Pine does the rest. So you want to build confidence. Show me you know what you're talking about. Describe your involvement with the topic.