Begin with the appropriate heading and address.
Be specific: State the specific bill number and issue and state your opinion in the 1st line.
Relate your experience with the issue. Use personal examples when possible. Your interest and concern about the issue is important.
Ask the legislator to specifically commit to supporting or opposing the legislation you are addressing
Ask for specific reasons they are supporting or opposing the proposal.
Cite any references at the end of the message in APA
Thank him or her for considering your opinion.