Dear Sir,
I am writing to propose a project that I believe would be a great fit for my skills and experience. As a freelancer, I have a strong track record of delivering high-quality work on time and within budget, and I am confident that I can do the same for your project.
If you are interested in working with me on this project, please let me know. I am available to answer any questions you may have.
Thank you for considering my proposal. I look forward to the opportunity to work with you.