Test of Controls

Sir i am in the process of practicing how to write test of controls in the exam and will like for you to confirm if i have the right approach.
Below is an example for the sales system.

Control Objective:
To ensure that only the quantity and description of goods ordered by the customer is delivered.

Control Procedure:
The stores outward clerk checks the goods dispatch note to the customer’s order before the goods leave the warehouse.

Test of Control:
I would ensure that only the quantity & description of goods orded is dispatched by selecting a sample of goods dispatch notes and the attached sales order notes and agreeing the quantity & description of goods on both documents.