Need Help Adding Creative Finance to a Standard Sales Agreement.

[Zachary Trexler]

I'm looking to use Creative Financing Strategies for purchasing property but all I have is my standard Purchase and Sale Agreement. What would I need to add to this contract to create a Sub-to + Seller Finance + Novation or Net Listings Purchase of Sale Agreement? 

Or, if you have sample contracts I can look at,  I'd really appreciate the help.