I believe Brassard actually requires two letters, not just two signatures. Yes, written in English is fine (mine was). I'm afraid I don't have - really, never got - copies of my letters, but he lists on the web site the details that the letters must contain.
My wife and I used the recommended B & B, and it was quite nice.
I don't feel comfortable sharing pictures of my genitals online, but I do have a thorough review of my experience if you want me to repost it.
Good luck!