Help, How do I write a good business proposal?

I Know it might sound awkward to ask this kind of question in this era, but, who knows ALL? No one. This is actually my first post on LeoFinance and I needed to ask this question.

I have a great business ideas. A whole lot of it, Raising a capital for one is like using my teeth to tear a wood. I just decided to write PROPOSALS TO FEW PROMINENT MEN I KNOW.
If you have any idea or where I can get a good sample, I will be glad. Thanking you all in advance.