Talking about creative briefs...

Here are a few articles that will help define what you should include in your creative brief. People use different formats to present them, so for yours, use a style that both supports your brand and communicates clearly what your objectives are for your campaign. The creative brief should be nicely designed, preferably using InDesign.

What Goes Into a Creative Brief

Successful Creative Briefs: Linking Business Objectives and Creative Strategies

Some Questions Posed in a Creative Brief

Writing a Creative Brief (old article, but still relevant)