Believe in what you are selling.
Believe in those you are selling to.
Completely understand the business of those you are selling to. If you don’t, stop writing and start researching.
Develop an extremely compelling, well-thought out and well-articulated argument. Make sure you clearly explain WHY.
Write the guts of the proposal first – Executive Summaries and Conclusions should (IMO) always be the last thing written, once you have written and understand your own argument.
Don’t ramble.
Revise, adjust, tweak. Repeat.
Revise it again.
Then just go ahead and succeed!
