On 24 Ways, Paul Boag offers suggestions for getting design approval.

1. Define the role of the client and designer
2. Understand the business
3. Understand the users
4. Avoid multiple concepts
5. Use mood boards
6. Say what you like
7. Wireframe the homepage
8. Present your designs
9. Provide written supporting material
10. Control the feedback

Read more at 24 Ways...