Really nice article. When I first joined Steemit I also had no idea what to write about, but I decided that since I know a few things about freelancing and since I work on Graphic River creating design packages, I should write about that.
It took me around 30 minutes to write something that I considered to be decent, and I was amazed when I saw that people liked it. I had no idea why, and I had no idea how I did it, but it happened.
I guess you should not ask yourself what you could write to get the attention of others. Doing that you may end up writing whatever you can to get upvotes and comments. Instead, I think you should always write about things you like and things you have some experience with. There will always be people who experience the same thing or who are interested in the topic you write about, and that may help you form a community around your content.
Great article, keep up the good work and best of luck! :)