Dear Sirs,
I am ready to start working seriously on this project. As an accountant, a big part of my work is on Excel so I can assure you that I have many skills and experience to do this job.
I will work every day after my actual job for you to be satisfied of my work.
You can contact me through email or phone number to start discussing about this job and for me to start working the soonest.
Thank you,
Best Regards,