Realize that writing is a process , not a short burst of frantic activity. The usual steps are planning, research, writing a rough draft, editing, then writing a final draft. Planning an article involves discussing why it is important and what you want to include. If you decide about length, scope and focus in advance, it will save you time and effort later.
Good articles are descriptive.
Draw on your own experience and talk to those who have more experience or different experience than you. The best articles help readers solve problems, save time, avoid mishaps and do their jobs more effectively. Write your draft the way you would tell the story to one of your friends. It should be informal and clear. Short words and short sentences are fine.