Dear Sir,
I have read your resume and I am keen to help you with your personal statement. I fully understand the anxiety and desire that you probably would be experiencing as you embark on your college applications because I am a student like you. At present, I am taking a gap year.
I have read and helped with several of my friends' personal statements and have written a few myself. As such, I am confident that I will be of amicable assistance to you.
If you like, I am willing to send sample copies of personal statements or related documents I have written to you. I look forward to hearing from you soon.
Ian