ergh, sorry, I have about twelve dozen tabs open which is perhaps not the best way of going about things. Typed this up but forgot to post

George D:
If you're writing a regular expository essay then you shouldn't have to worry about audience. If it's a speech, then have something at the start like 'Good morning ladies and gentlemen of the United States Art Appreciation Society, today I'm here to talk to you about...' or preferably something less clunky depending on your form. Apologies if I've misinterpreted your question; let me know what form you're doing if you'res still confused.
Zezima:
Try and use more formal language wherever possible. If all else fails, write the simpler/colloquial word and put a mark on the side of the page. Do this for all spelling uncertainties, possible misquotes, or areas you're just iffy about. That way, if you have time at the end, you'll be able to edit quickly and efficiently since you know where everything is.
I'd also advice against using dictionaries unless you are very confident in your timing. I left mine till the end, since it's more important to finish your essay and have it be structurally and ideologically sound than it is to spell a word right. The latter is a lot easier to fix too, especially if you only have a few minutes, or even seconds left at the end.
millie96:
Just shade the box. If you're writing a good essay, it should be clear within two to three sentences which topic you're dealing with anyway.
coezooke:
There are a bunch of threads at the moment with recommended concl. structure, so take a look at those if you need.
You're definitely not meant to discuss effectiveness or overall persuadability (?) of the articles. My pattern was to begin the concl. by summing up how the author concludes their piece, link this to a major concern, appeal, or dichotomy evident within the article, and the some general statement about how language was used overall, or how the author wants readers to think/feel/act by the end.