You will not catch everything, so check the right things
The essay is done and you have about two minutes left. You cannot re-read the whole thing, so do not try. Instead, run a fast, fixed check on the high-value things. These are the cheap mistakes that quietly cost real marks, and most of them take only seconds to fix. Here is the 2-minute check to run before you hit submit.
The 2-minute check before you submit
3 quick catches you can fix in seconds
Why the last two minutes matter more than they seem
When you write, your brain is busy making ideas. It stops seeing small mistakes. A missing word or a wrong verb feels invisible because you know what you meant to say. Two minutes of fresh eyes at the end works differently. You are reading, not writing, so the small errors jump out. Fixing three of them can lift your accuracy, and accuracy is part of your grammar score. That is a real gain for almost no effort.
Read next
Keep going with the series: 6 mistakes that drop your score fast and one essay shape for every question.
Build the habit before test day
The check only works if it is automatic, so practice it now. Write a full essay in VoyaLang, then run your 2-minute check before you look at the feedback. See how many of your own catches match what the tool finds, and learn the mistakes you keep missing. Create a free account and check your next one in about a minute.