The conclusion part of the essay is the most important. With the support of the previous paragraphs, the conclusion must not start a new argument nor can it support the positive or the negative side of the topic. It must restate the thesis from the introduction paragraph and make a general statement about the facts that have been discussed in the essay. In other words, the conclusion should be unique and remain neutral. It can be a good idea to end your essay with a personal opinion about the topic. The opinion should be supported by the information provided in the previous part of the essay.
Which way should your essay tilt? Some essays wrap blunt opinions in layered language, ensnaring a reader with charm, not coercion. Louis Lapham's essays often take a political angle, but any advocacy is cloaked in beguiling prose. A how-to essay might explain a process, but its steps wouldn't be the mechanistic ones of a manual, but more the methods of throwing procedural doors open, lighting from within.
The beauty of your essay is in the wide usage of linking words and phrases to make your essay more interesting to the reader and easier to understand. Avoid repetition of the same words and phrases, look for the synonyms and synonymous expressions. You can also use a variety of adjectives, adverbs and verbs to make your essay more attractive to the reader.