posted by lt .
. Theory and origin of the separation of powers
II. The division of powers among the branches of government
A. The executive branch
B. The legislative branch
III. The separation of church and state
IV. The judicial branch
V. Current ideas about the separation of powers
most improve outline
I would add something about states vs Federal.
I don't see anything in your outline mentioning the origin of this idea (Certainly the Magna Carta played an important part), nor the theory.