Tips on writing essays:
-Don't be wordy. Use clear sentences, and write down the points you want to make beforehand so you know exactly what you need to write about.
-Don't be afraid to edit! Write a full story if you need to, and then clean it up when you're done writing to make it legible and precise.
-Don't focus on how many words/letters you've written so far. Write as much as you can, and then after you're done with the editing process add more if needed.
-Don't include sentences that don't support your main topic, that could get your grade lowered.
-Don't rush yourself, even if you're in a hurry. Your writing will come out sloppy and it'll be very transparent you just started working on it.