Scott Burkun gives some advice on pitching ideas:
The best delivery advice I can offer is to make sure you spend some time preparing for a positive response. What happens if they say “That’s an interesting idea. What do you want from me?” Do you want money? Other resources? A change in the project plan? A feature added to the feature list? Know what the sequence of steps are after they agree you have a good idea and be ready to ask for them.