That usually happens, I do not think it's about what you do not know how to write, but you lack a certain order.
I'm going to share a simple technique that I learned at school.
You can start like this, then you have precise what you want to write, start with the following:
1.- General Introduction: It is a general idea of what you are going to talk about.
2.- Development The point: In this section you can talk more from the point you want to deal with in the publication, if you find it difficult to put together the idea, divide it into parts and add subtitles.
3.- Close, with a contribution or reflection of the issue of the publication. You can also leave the open interest to continue with another.
I hope these simple steps can be used for support.
Any questions, here we will be at #Blurtschool.
Good vibes.