Thanks, Wangsuda. As you do, that's very helpful, professional, etc. And this time, simple and easy. Actually, it might seem obvious to teachers who are trained in writing business letters. But many teachers aren't.
When writing a letter, do not think only about yourself as the author. Think of your audience, which is in this case the guy actually doing the hiring, or his staff assistant.
I do not think that my audience knows how to open an e-mail attachment. Unless the resume is automatically attached (as the ajarn.com database, and TEFLAsia which is the same), I copy my own version of my resume directly into the e-mail.
Did you know that the photo you put on ajarn.com/TEFLAsia database goes directly to the employer, on top of page one? I went to an interview recently and there was my photo on her desk, staring up at us.
Employers can search the employee databases, including the photos. An old mate saw my photo and called me to offer a job!
Keep it simple. The employer doesn't have time to read about Mrs. Settle, your ceramics arts teacher in grade three. If you read John Mark Karr's resume, the one posted on the internet, you never would have called him or hired him. He was unbalanced, and it showed.