Dear Sir or Madam,
Thank you so much for taking the time to read a brief description about myself. My name is James Ho, a Taiwanese citizen who had worked as an English textbook editor / writer for Pearson Education Asia in Hong Kong, earned my MA in English Studies at HKU, and am currently working as an independent language consultant back home in Taiwan for the sake of a quality lifestyle.
With my native-speaking level of proficiency in English (I took TOEFL iBT about 8 years ago with the score of 112), Chinese (both simplified and traditional), and Taiwanese, effective understanding of Japanese, as well as extensive experience living, studying and working throughout Taiwan, China and Hong Kong for the past 10 years, I believe I have sufficient credentials for accomplishing the tasks of the position as freelance Mandarin-to-English translator that you've advertised.
I've attached to this email my resume for your reference. I sincerely hope that I could be granted an opportunity to contribute to your organization.
Again, thank you so much for your help and I look forward to working with you soon.