In order to express yourself successfully through writing you need words - Lots of words. Learning new words is fantastic; using them appropriately is even better.
*Tip: When you learn a new word, try to also find one synonym and one antonym of that word.
Improve your spelling.
You must know how to spell those words correctly. Incorrect spelling changes the meaning of your sentence. For example: "bare" and "bear" are pronounced the same but "bare" means naked and "bear" is a large animal. Additionally, incorrect spelling makes it difficult for the reader to understand what you’ve written.
*Tip: Practice your spelling!
Improve your reading.
Reading more English is always useful. It is also a way to help you get an idea of the different styles of writing and see how to use words appropriately. Always choose books or articles with topics that interest you. Learning shouldn’t be boring.
Improve your grammar.
Grammar is very important because it improves the quality of your writing. Always use the appropriate tense and remember to use punctuation. Punctuation is a great way to make your writing clear and fluent.
Writing can be daunting. However, the best way to improve is get a pen and paper or sit in front of your computer and ACTUALLY WRITE. Remember, "Practice makes perfect".