You should start out the letter stating all of the relevant case information. You need to tell the judge your name, case number, charge and sentence imposed.Proving that you've done community service is pretty straightforward if you have some documentation. Certificate of Service. I have 50 hrs of community service to complete. Speak to the person at the courthouse and find out for sure and what forms you need to have completed. To request court ordered community service, please complete and submit the form. O Write the current date in the last paragraph of the Motion and Notice of Hearing. Referral form from the probation office to be given to the community service provider. An interesting question.