Because of legal requirements, petitions must be completed and returned EXACTLY as required by law. One little mistake and it can be deemed invalid.
The best way to guarantee your signature counts is to sign a petition offered to you by a petition gatherer. You can also download one here but follow the directions carefully.

Please mail your completed petition to:
Sacramentans for Accountable Government
455 Capitol Mall, Suite 801
Sacramento, Ca 95814