Inscrivez-vous ou connectez-vous pour rejoindre votre communauté professionnelle.
I think it is really important to read more, because it helps in learning how to write properly, especially when we talk about writing formal English.
It is extremely important also to practice, the more you write, the better you'll get.
Also, leave the written work for some time then get back to it with a fresh mind, it helps in seeing things you could write better.
