Do not try to write about 2 or 3 things in the same article. Keep your focus on one topic to keep the interest of your reader. Conclude with a strong message. A message that summarises your article or gets your reader to take further action. Finally, be humble.
People admire people who are humble.
Do not talk down to your readers. Learn as much as you can about writing on the internet. It really is different to writing in the offline world. Read as many articles as you can and see which ones you find easier to read.