You should first understand your potential investors background before pitching. Are they angel investors or venture capitalists? Next, you also have to consider your funding strategy that could include a mixture of bootrapping, angel investors and VCs sources.
Having a good idea and pitch could get you the money. But picking a funding strategy is also about whom you want to work with. Grasshopper Group summarized the characteristics of each type of investor and designed it as an infographic to help you understand them better: