Writing an essay is all about organizing your thoughts. Here's how to put together your ideas into a coherent analytical essay. An analytical essay is an essay that compares main ideas between 2 topics.

[edit] Steps

Draw a square and put your introduction in it. (The introduction should grab your reader's attention.)
Start to plot out what you want to write. Do this underneath your introduction.
Come up with a main idea for each paragraph. Explain your main idea; maybe throw in a quote that will help to explain it in better detail.
Back up your ideas with examples. If you're writing a descriptive essay, consider a personal example. Otherwise, find an objective example to support your analysis.
Follow these procedures for each paragraph that you need to write.
State your conclusion. Restate your introduction and leave the readers thinking. Make your conclusion something very brief that anyone could read. Try writing as if you were talking to a toddler, a very effective way of getting your point across.

[edit] Tips

Beginnings and endings are good places to use quotes, metaphors, and repetition, for effect, because introductions and conclusions should not have any details or in-depth analysis; that is what your body paragraph are there for.
If you are writing a formal analysis or critique, then avoid using colloquial writing. Though informal language may bring some color to a paper, you do not want to risk weakening your argument by influencing it with verbal slang.
Ask yourself "What am I trying to prove?" The answer should be in your thesis. If not, go back and fix it.

[edit] Warnings

Avoid making your essay too tacky by using too few quotations. Remember that you want to incorporate others' ideas, too.
Don't try to add useless sentences to make an analytical essay longer; it is better to leave it short and to the point. Make each sentence count.