Remember the strong (and weak) elements highlighted in the comparison essay examples to keep you on the right path.
Compare and contrast is a common form of academic writing, either as an essay type on its own, or as part of a larger essay which includes one or more paragraphs which compare or contrast.
After your introduction, in the next paragraph discuss one similarity or difference in BOTH works or characters, and then move on in the next paragraph to the second similarity or difference in both, then the third, and so forth, until you're done.
If you are doing both similarities and differences, juggle them on scrap paper so that in each part you put the less important first ("X and Y are both alike in their social positions . ."), followed by the more important ("but X is much more aware of the dangers of his position than is Y").
Then for organizing your essay, choose one of the plans described below whichever best fits your list.
Finally, and this is important, what main point (thesis) might you make in the essay about the two people/things being compared?
In this format, the comparing or contrasting goes on in EACH of the middle parts.
The following outline may be helpful; however, do not be limited by it.
This page gives information on what a compare and contrast essay is, how to structure this type of essay, how to use compare and contrast structure words, and how to make sure you use appropriate criteria for comparison/contrast.
There is also an example compare and contrast essay on the topic of communication technology, as well as some exercises to help you practice this area.