This is a great topic and I hope that you learn a lot during the process. A good place to start is by looking at one of the most important recent works on that topic. Edward Said's work on the topic of oriental is seminal. By reading this book, you will get many insights. With that said, here are some ideas.

First, you can write on categories of thoughts and how categories of though are different from culture to culture. So, look at western categories of thought or a western commonsense view of the world and compare it with an eastern one. More specifically, you can hone in on a specific topic such as individualism and compare and contrast. Or how about the topic of religion. This can be huge.

Second, you can go even deeper and ask the question of what western critiques of the East tell us about the West. I will add a link to the social theory of Peter Berger.