Regardless of how skilled you are, practice is crucial. You can now write or speak to this person, depending on your level of proficiency.
However, It is not crucial that the person you are practicing with is a native English speaker, which refers to someone who was born in a country where English is the official language. In many cases, a native-like English speaker, or someone who was not born in an English-speaking nation, had learned the language herself and can teach you or make things clearer to you than someone who only picked up the language naturally without taking classes to learn it.
Leggere di piú