I have been a professional writer & Wikipedia Consultant since 2006.
I have been contributing to Wikipedia as a volunteer editor since 2006. In addition, I currently offer a range of paid services centered around Professional Wikipedia Consultation, and I am among the top 5 Wikipedia Professionals on freelancer, with a high Job Success Score of 92%+. As a Professional Wikipedia Consultant, I help individuals and organizations understand Wikipedia's rules and policies (especially regarding notability, sourcing, formatting and neutrality).
In my off-platform free time as a volunteer editor, I work on improving or creating pages related to technology & industry, the arts & media, non-profit organizations, and academia. As such, I am familiar with Wikipedia’s guidelines for pages in these areas, as well as a variety of industries and subtopics.
Unfortunately, Wikipedia's sprawling policies are not very easy to research and are often counterintuitive, which makes Wikipedia an uninviting place for people unfamiliar with it.
The bright side of Wikipedia's policies and guidelines, is that they are what make it such a highly regarded and widely read source. New Wikipedia pages must meet high standards for notability, verifiability, and neutrality. This means that pages have to be written in an unbiased way, and they must have a certain amount of references to reliable, independent sources.