Did these last year in Lit 1/2. Uhhh...to answer your question, intro's and conclusion's are obviously always required for anything you do in Lit.
Basic Structure?
Ok, i did plenty of research on "alternative" viewpoints of the film and what others thought of it in regard of PLOT, THEMES, CHARACTERISATION...(their opinion does not really count) and use their ideas as your base structure. Mostly, in alternative viewpoints sacs, you use the Argumentative Essay Structure-intro, PRO-TOPIC B1, CON-TOPIC B2, conclusion.
For example, i dis Casablanca, as my film, and compared and contrasted the ideas of its "relevance" to society and as a romantic film-it does not have the conventional "happy ending" which made it stand apart from all the other romantic films at the time(b1), and then I went on to the ARRANGEMENT of the film and commented on the unusual friendship between Louis and the main character( the name escapes me) which made it a different romantic film....(b2). As you can see, they all go back to the contention that Casablanca was not a typical romantic film.
I loved Literature in year 11, however but pls dont take my advice verbatim, since I never really paid any attention to Literature and it was my bludge subject while I could concentrate on the others. I'm pretty sure what i wrote is correct, because I recall putting a decent amount of work in it, but I'm pretty sure you should be fine:)