Here's a basic format:
1. This is the skill...describe it and how you learned it.
2. This is what you do with the skill now or in the past.
3. Show how the use of the skill makes you self reliant.
4. Indicate how, once others have the skill, how they can share it.
1. I've been a carpenter since 1973...then I'd give some description.
2. This is what I can do...a really long paragraph in my case.
3. The fact that I can do concrete work, painting, woodwork, etc. let's me DO the work, saving money and not relying on others.
4. Write an article to illustrate the skill, like mine, "How to Build A Laundry Table from Adjustable Plans."