I would enjoy chatting with you. I have dedicated my career to each of these pursuits, as my enclosed resume will attest.
John Doe. I have held supplementary tutoring sessions with struggling and special need students, and regularly integrate new classroom technologies into lesson to excite my students. I look forward to telling you more about my qualifications in person.
In the second bad example, it comes off as too demanding, like the writer is evaluating the reader, not vice versa. For more than 10 years, I provided effective classroom management, creative lesson plans, detailed student evaluations and highly praised instructional delivery.
Bad pitch examples: I would love to teach at your school.
Pick something clean and basic, like Times.