Thank you for inviting me to this project.
Based on the requirements outlined, I can safely say that I am the best person to assist you with proofing and editing your eBook. I am an established English lecturer with a writing background that goes back over four years. With that being said, I am also quite familiar with the use of track changes, so this is not something that will pose a problem for me. Unfortunately, the samples you request cannot be sent via the proposal; so I invite you to have a talk with me so we can iron out any questions or concerns that you may have. I look forward to speaking with you.
Regards,
LB