Although it may seem like a waste of time - especially during exams where time is tight - it is almost always better to brainstorm a bit before beginning your essay. This should enable you to find the best supporting ideas - rather than simply the first ones that come to mind - and position them in your essay accordingly.
Your best supporting idea - the one that most strongly makes your case and, simultaneously, about which you have the most knowledge - should go first. Even the best-written essays can fail because of ineffectively placed arguments.
Aim for Variety
Sentences and vocabulary of varying complexity are one of the hallmarks of effective writing. When you are writing, try to avoid using the same words and phrases over and over again. You don't have to be a walking thesaurus but a little variance can make the same idea sparkle.
If you are asked about "money," you could try "wealth" or "riches." At the same time, avoid beginning sentences the dull pattern of "subject + verb + direct object." Although examples of this are harder to give, consider our writing throughout this article as one big example of sentence structure variety.
Practice! Practice! Practice!
In the end, though, remember that good writing does not happen by accident. Although we have endeavored to explain everything that goes into effective essay writing in as clear and concise a way as possible, it is much easier in theory than it is in practice.
As a result, we recommend that you practice writing sample essays on various topics. Even if they are not masterpieces at first, a bit of regular practice will soon change that - and make you better prepared when it comes to the real thing.