How do I file a contempt of court for non child support?

My first suggestion is that you consult with an experienced family law attorney in your area to discuss this matter. In Arizona there are forms available online for parties who wish to represent themselves. Assuming that there is already a court order in place then here is a link to the Maricopa County Superior Court self service center page that has the appropriate forms and instructions: http://www.superiorcourt.maricopa.gov/SuperiorCourt/Self-ServiceCenter/Forms/FamilyCourt/fc_group_11.asp

You file a motion that alleges each time the other parent did not pay the child support, e.g. he did not pay on December 1,2013, second count, he did not pay on January 1, 2014. Each non-payment is a separate count of contempt.

The answer depends on whether you will retain an attorney to represent you in the contempt matter. If you win, the court is allowed to order the contemnor to pay your related attorney fees. If doing this without an attorney, contact your court house's Family Law Facilitator and request the contempt forms that need to be filed and served.