The beauty of science writing is that the format is very predictable. When writing a manuscript here are the sections:
Title
Authors and affiliations
Abstract
Introduction
Methods
Results
Discussion
Acknowledgements (and funding sources)
Competing Interests Statement
Supplemental Materials
The hard part is what to expect in each of these sections. These resources provide detail on how to prepare a science manuscript by breaking down all the individual components.
The rules are a bit different when writing a scientific review. There is a lot more flexibility here. I recommend spending inordinate amounts of time on making beautiful summary figures. As a reader of the review, I appreciate very helpful figures I can incorporate into my teaching. This paper outlines how to approach writing a review article. "Ten Simple Rules for writing a literature review" by Marco Pautasso (2013).