Define the Scope of the Work - The terms constitute the body of the contract. Start off by clearly defining what it is the scope of the work or service you are to provide, and the timeline you propose to complete the work. Be specific. Don't simply say you will renovate a client's kitchen. Provide details of the cabinet designs, countertops, and other materials and work you will provide. If applicable, give a timeframe for each phase of a project.
Describe the other party's obligations in detail. In the case of out brochure writing example, this might explain that the client is responsible for providing the copywriter with business information in a word processing document to describe the business and the information to be included in the brochure text.