Our teacher prefers us to write our essay more freely and flowingly; personally, i believe that there really isn't a way to write a literature essay, just so long as you address : Characterisation, transformation, views and values of both authors, and a bit of your own interpretation and criticism at the end.
How I generally do it is I often start off with a technique/device; from that I lead onto characterisation and of course the transformation- expanding upon why the particuliar director has transformed the character and how (but very briefly as to avoid 're-telling' the story), then from his changes, I mention how his views and values have been communicated and of course, how this would differ from the views and values of the original text. There really is, as far as I know, no set formula to a transformation piece. But my teacher has stressed that you must "expand, expand, expand". She mentions that some students mention a very brilliant point, but move onto another point as they feel that they have 'expanded' enough on that point even though it may be very brief. So that's the "explanation" part of TEEL.
hehe, TCVVL= Tuh-kev-al
technique, characterisation, views and values communicated, views and values subverted and a very brief link.
That's my take on things at least- i'm only starting year 12 literature this year so hopefully someone who has completed it posts.