Think First
Think about your experiences in this class. What did you learn? Who did you meet? Where did you go? Did this class change you in any way, e.g. your thoughts about yourself, your beliefs, the world, etc.? Was there anything you loved about this class? Was there anything you didn't like? Is there anything that you think you'll remember forever? etc.
Then Write
Write a blog post about the experiences and feelings you have about this class.