How to write good English?

You are running before you can walk at the moment. You have a basic grasp of English but need to re-visit some of the basics like verb subject agreement. Look at the difference between formal and informal writing. We do not write how we speak, we use a different set of rules. Read articles on many different topics and study the language used. You have learned some grammar but need to understand that even native speakers sometimes have to look up grammar rules for certain genres of English. Business English for example uses lots of set phrases that are adapted to suit the situation. Essay writing uses another set of techniques. Are you writing it in the first person, as a narrative, in the third person, or in passive or active. Learning to paragraph is relatively easy. Use a new paragraph when you use a new idea or change the place, action, character or event. There is plenty of help out on the internet, just do a little research.

It is better to have some knowledge about how to make a perfect sentence, because a sentence makes a feel comfortable to make a good and long paragraph. Use adverbs and adjectives at the right place. Do not try to use useless things while writing a paragraph or an essay; it makes your writing a crap. Always make a back ground first to make a good essay.