Contract Help!

Hey all!
I was wondering if any of your prospective organizations receive a percentage of a for-profit's sales as donations, and if so, could I see a copy of the agreement? I'm supposed to draft a contract to this end, and I'm a little muddled. Thanks!
-Audrey

P.S. FYI, the Adopt an Animal proposal was approved, and I'll be moving forward with two more proposals for further revenue generation. YAY!