The writing style is one of the more cumbersome things that you have to learn once you decide to publish any research in English (as a non native speaker). Despite knowing English quite well, understanding everything and no trouble in almost any everyday situation, the specific writing is different. English articles follow a well defined structure of chapters and paragraphs that makes texts differ from those in e.g. German or French. Each paragraph has a particular structure by itself. Writing good English requires a lot of training and the awareness about rules that make good paragraphs differ from bad ones.
There are numerous resources online to help learning how to write in academic English. The market on books and training is huge. Blogs and even Twitter accounts like Write4Research provide a lot of short and long pieces on different aspects of writing. There are MOOCs available, for example on edX. Help can be found easily as well on the paid side and for free.
Today I want to recommend one particular article about the issue of paragraph writing. Medium.com is one of my favorite resources about writing in academia. The texts are usually well written and easy to read as well as the right amount to skim through them in a writing break. They have a very good piece on How to write paragraphs in English that provides us with the basic concept of a paragraph and common mistakes. This is all you need for a good writing. Get started!