Enter both the name and address of each spouse along with the date the marriage was celebrated. Also, include the date of marriage and specify whether or not cohabitation took place between the spouses prior to marriage. If either spouse has been married before or already had children, these details should also be included. 

It's important to indicate whether or not a certain property is "shared property" (i.e., any property in which the spouses have signed documentation reflecting their clear intention to share ownership). It is also very important that both spouses be completely thorough in disclosing all assets, debts, and income sources in the document. 

You have the option of requiring disputes to be resolved through mediation and/or arbitration. In mediation, an impartial mediator helps the parties discuss the legalities of their conflict in order to reach an agreement. Arbitration is similar except that the arbitrator issues a legally binding ruling on the dispute.

In order to make sure your agreement is legally valid, you need to ensure that it is properly executed. When the parties are ready to sign, they should be sure to initial at the bottom of every page of the agreement in order to show that each page was read.