If you want to do great work, you have to be able to generate the great ideas, but, more importantly, be able to sell the great ideas. Many designers struggle with this issue and hope that their work will stand on its own two legs and sell itself. It is not difficult to sell your work if it truly is good and meets the client's objectives; you just need the right tools.
The Juxt Interactive process for winning the client
Storyboarding for multiple mediums
Using illustration tools with Flash to maximize your design process