Minimum 5 pages.

A student writes,

I'm a tad confused as to where I should put my antithesis in my paper, since I don't recall ever writing a paper with one that has been spelled out so clearly. Is this something I should include in my opening paragraph? Or should it just appear later in the paper?

There's no single set place where it has to be. "While Darcy at first appears to be a good catch, Elizabeth Bennet becomes keenly aware of several character flaws that give her good reason to doubt his intentions."

That neatly gives the antithesis first, and the main argument second. It can be as simple as that. If you feel your audience is likely to disagree with you, you can start by making a lukewarm argument FOR your antithesis, then exploding it with a list of weaknesses, which you then examine in great detail, and then continue with positive support for your thesis (support that any argument for the antithesis won't be able to touch).

Did that help?