I am in the process of putting together an agreement (contract) to sub for another VA on some of her projects (personal and clients). Since I am fairly new to being a VA (although I have many years of experience outside of this), I have spent the majority of my time getting my website up and running and haven't spent the time on the contracts/agreements that I will need. So, when this opportunity to sub for another VA came about, I didn't have a sub agreement in place.

I didn't see anything like this in the document library - or perhaps I missed it.
What all should be included in my subcontracting agreement?
Thanks a bunch for your help - it is much appreciated as always!