It is important that you brush up your soft skills while you have the time. however, fluent you are with the language aspects, you may have certain hindrances which you may not have come across during the day. the end 
results are not very pleasing most of the time due to this. Therefore, it is important to work hard on all aspects on the testing fields. The next thing that many of us have, will be the time factor. you will either be working or schooling which will be a little difficult to attend lectures or classes. However, depending on the reliability, there are a few online courses that you can visit and practice these English tests.
Allocating time
Self-studying is not like the traditional mode of studying. When studying by oneself, there is no motivation or push making you attend to the practice tests offered by the pte books. However, it is comparatively very easy to follow lectures when doing it online. You will not have to spend your time and money on travelling on the road and staying stuck in the traffic block at peak hours. As a self-learner, it is important that you draw up a time table showing the times and hours allocated towards the practice process. When you have a systematic and solid plan, you will not need to worry about not covering aspects under each topic.
Reliability
The next aspect that you should consider is the reliability. Many would say that online sources do not provide the necessary details that are needed to follow English courses. However, it is not the same always. you could obtain the proper and accurate sources on the internet, if you gain access from the most trusted websites in the world. you may not have the knowledge on this, therefore, it is best to find good recommendations from acceptable and accurate parties. Websites that provide tests such as OET Sydney should comply with the rules and recommendations from internationally acceptable bodies.
Practice makes you perfect
Once you have established the site that you believe will provide you with the most accurate material, you will need to start on the practice sessions which will give you the necessary practice and familiarity regarding the tests thereby secure a high rank or grade at the end of the exam. Material should be read on a regular basis and reviews regarding the source should help you be updated. When you become familiar to the practice environment, you will be able to easily feel comfortable while attempting the exam environment.