Quick Question. How to structure a written proposal?

[Greg Foster]

We received a phone call from a letter we sent to a distressed property, the owner would like to joint venture with us to fix up and sell the property.  The owner went to his attorney and the attorney advise to have us put the deal in writing. Does anyone have experience putting together written proposals. Looking for a little advice so we can come across professional and the real deal. Need help on the best structure.

Thanks BP community.