Your rough draft should be 600-700 words.
It should have four sources.
The guidelines below should help you construct your essay:
First, compose a sentence or two that discusses the background/situation. Can you find a way to expand this problem to relate to a more general audience? Can you relate it to an important concrete issue (health/safety/benefits for society)?
Second, describe the problem.
Third, propose, or describe, a solution.
Fourth, evaluate the solution.
Fifth, propose or describe an alternate or new solution.
Sixth, evaluate this second solution.