And everybody of us can practice as well. This section of the forum, you are right, can have also educational scopes… really.
Since, at least until now, no English native speakers have shown up, all of us, I suppose, feel the need to exercise in order to get fluent... and hardly real Queen’s English will be read here.
For what concerns writing, I suggest to make the best use of the modern word processors (preferably OpenOffice Writer or, for rich people

, MSWord) and set the default language as UK English or US English (according to the taste), enabling the automatic correction, spelling, grammar, etc.
It costs something in terms of time to write first in the WordProcessor and after copy-paste here, but it is worthwhile, believe me.
Unless one is very confident in its English language skills, I do not recommend direct writing in the forum.
Welcome in this section ipslon