Hello!
You have to ask yourself: Why I need a business partner?
What value this partner can bring to my business? How much this value costs? Does he/she shares the same values and has same vision like I do?
According to answers you can prepare a nice offer and a small presentation.
But do not forget to connect with your lawyer and prepare all the documents in a proper way, defending your part in the Company. (always do this)
Remember, that conflicts between partners are the fastest way to the destruction of the company.
Have questions? Call me. I am MBA, PhD, professional in business transformation and business development.