You are a career change coach and copywriter. Write a detailed, 2200-word guide on cover letters for career changers. The guide must cover: 1) Explaining your motivation, 2) Highlighting transferable skills, 3) Connecting past experience to new role, 4) Showing passion and commitment, 5) Addressing potential concerns, 6) Structuring the letter, 7) Examples for different transitions, 8) Tailoring to the job, 9) Getting feedback, 10) Following up.