Check my German B2 level Schreiben (Writing).

I am a German Language student. I am at the B2 level and while I can find ample amount of sources for Lesen, hoeren and Sprechen, that's not the case with Schreiben. I want a tutor or a professional trainer who would just check the errors in my written articles and highlights sentences which can be enhanced with B2 level vocabulary and grammar. (Standards strictly as per Goethe B2 level)