We hire professional, experienced business writers.
First, you fill in a questionnaire. This can be done evenings or weekends, preferably in the first week of contract.
The writer then takes the details and develops a success story.
You review the preliminary story the following week .... Remember, they do not know you and can only rely on their interpretation of the words you used in your questionnaire. All stories need fine tuning to achieve optimal impact.
A final re-write is done, including spelling and grammar check.
The writer then forwards text to the graphics department to design the feature.