1. Use a master map
2. Stick to one map, one purpose.
3. Use icons in your maps.
4. Optimize the content of your maps.
5. Avoid clutter and unnecessary detail in your maps.
6. Consistency is critical.
7. Leverage the power of images.
8. Consider creating a personal dashboard map.
As I stated in the previous post of "The Secret to Creative Presentations", mind maps are a great way to create a more useful structure AND increase your creativity while creating content for a presentation.