EXAMPLES AND GUIDELINES
http://web.uvic.ca/wguide/Pages/SampleEssaysLit.html
http://web.uvic.ca/wguide/Pages/LiteraryEssay.html
and, taken from this site, something to keep:
“(…) be wary of plagiarism and of letting the opinions of more experienced writers swamp your own response to the work. If you are going to consult the critics, you should reread the literary work you are discussing and make some notes on it before looking at any criticism“.