Do your research.
Tailor your statement to the institution, content, student population, and other unique attributes of the situation.
Keep it short and well-written.
The best teaching statements are 1-2 pages, free of jargon, and well-edited.
Make it personal.
Use first-person, be sincere and humble, and share personal insights.
Provide examples, share data results, and describe how what you do positively affects students.
Remember, it's not about you.
It's about the students, their learning and their success.