Calling writing a skill means it is an ability you learn and improve through practice, not a gift you are born with or without. It can be taught, practised, and made better over time.
Her first emails were clumsy, but a year of daily notes made them clear. Something learned, not inborn.
He rewrites the same paragraph three times and the final one reads better. Improvement through practice shows the skill at work.
After months of practice, a clerk who once wrote short, blunt replies drafts friendlier messages. Her line now reads Thanks for your patience. I will check this today and confirm by Friday, warmer than her old note. The change came from repeated tries, not a new talent.