Verb Subject Agreement
You may want to have an attorney review and make suggestions on a template of your business contract. An attorney can pinpoint issues for your particular business that you may need to include in the agreement. You can use a business agreement template and modify it to fit your needs, rather than writing the agreement from scratch.
Naming the Parties - You begin the contract by naming the parties in the agreement. This may seem obvious, but attorney Mark Cohen of Colorado writes in his article Ten Things to Consider Before Signing a Contract that "a common error is to use the name of a person representing an entity rather than the name of the entity."