Just go by your heart's voice, listen to it what actually it communcates? What I mean to say is writing is an outcome of what heart and mind coordinately communcate to the writing hands... so the writing process has to be natural.
List out your favorite and interesting topics and also those pertaining to your specialized fields.
To start with, take any one topic and write down your views. If the topic demands reading of books and research work, you should opt best ways to accomplish the task. You will see the reflection of your interest coupled with hardwork in the beautiful piece of write what we call as an impressive article.
May Almighty Allah help you. All the best.