If you struggle to get ideas down on paper have a try at mind mapping. A simple imagery based technique that frees up ideas and increases recall using simple easy to spot prompts.
The layout and simplicity of a mindmap saves you time by highlighting rather than hiding the words you know you want to talk about.
A quick scan of your map and you know where your flow is going and what you still need to cover.
Have a read of the following books or even better have a play with the free software download.