The biggest tip that I can give you is "analyze your practices"
The very first purpose of practice tests is to show you whether you're ready for the real test or not.
While doing them you will make mistakes, and that's totally fine. However, what's not fine is to leave that practice test without deeply analyzing your mistakes. Why did you make those mistakes? What made you think that correct answer is incorrect? Question every single action of yours, and, at some point, you will find the root of the problem. Once you've found it, rip it and make sure that it will not bother you anymore.
The very first purpose of practice tests is to show you whether you're ready for the real test or not.
While doing them you will make mistakes, and that's totally fine. However, what's not fine is to leave that practice test without deeply analyzing your mistakes. Why did you make those mistakes? What made you think that correct answer is incorrect? Question every single action of yours, and, at some point, you will find the root of the problem. Once you've found it, rip it and make sure that it will not bother you anymore.