What are examples of feature articles conventions and techniques?

A convention is the things that structure a particular text type.

eg. A convention for a feature article would be statistics, the techniques that show this convention are things like emotive language, descriptive language, dot points and text boxes.

eg2. a convention for a short story could be senquence of events and the technique used to show this would be flashback.

eg3. a convention in a documentary would be camera angles and technique would be medium close up or long shot etc.

hope this helps :)