I found a form on an australian immigration site awhile back and made a sample letter to send my family/friends. I can't find the site now but what I sent out was like this:
DATE
TO WHOM IT MAY CONCERN:
I
NAME OF PERSON, of
LOCATION, solemnly declare that
PRINCIPAL APPLICANT NAME and
SPONSOR NAME have maintained a real and honest relationship. I also believe their marriage to be genuine and continuing. I have known
PRINCIPAL APPLICANT for
# year(s) and
SPONSOR for
# year(s). I have known about their relationship for
# year(s).
Also include in letter
1. How you know the applicant and the applicant's sponsor and indicate how often you have been in contact with them.
2. Give reasons for your belief
3. State andy other matters you wish to add
NAME
SIGNATURE
ADDRESS
PHONE NUMBER
I also included a copy of this with my application and explained that this is what i sent out so that they wouldn't be suspicious of why everyones letter sounded alike. Hope this helps
