I was hired to write a proposal recently for a client.
The things you need to remember are that you need to demonstrate why the client should choose your products. So think about what’s important to them, and how your products will help themsolve any problems they’re having.
Give them (for example) 5 reasons to choose you.
Include testimonials, sales figures etc to PROVE the claims you make.
And make an exceptional offer to them. Can you give them some free products to put in your store to sell? What else can you offer them?