Until you get a handle for the expert level of articles you want to be known for, start out with shorter, 200-300 word snippets that focus on one idea then encapsulate it into a bigger article once you have enough snippets to make a whole.
For example, if I wanted to provide an eBook on writing features and benefits, I might start with these small snippets, using a car as my example:
· Air bags
· Seat belts
· Body type
· Anti-locking brakes prevent you from skidding into a tree as you try to swerve from hitting a dog in the road.
· Quality tires will grip the road in the snow easier than balding tires.
· Air bags in multiple locations of your vehicle will ensure your safety in an accident.
· Premium gasoline will keep your engine running smoothly.
· Seat belts that lock on impact preventing death.
· Certain color cars are more apt to be in accidents due to blindness and inattentive drivers not noticing them.
· The body type will help you in that collision with a semi, do you want to be in a putt-putt car or a 4×4?
This is just a quick way to brainstorm the features and benefits when you are breaking down your product for a client. But take it a step further. Every one of the features, by themselves are worthy of 200 to 300 words. Because you will expand on my simple, quick off the top of my head thoughts. You will have manufacturers to recommend, prices you can quote, websites you can direct people to. And before you know it, you have an article. This piece is 300 words.