This is especially for Gumroad where you have to write about your product.
As a guideline, answer these questions.
What is this template about?
What problem is it trying to solve?
What’s inside? What will the users get?
- The template itself
- A demo
- A written manual
- Lifetime update
- …
If there are any questions, how to contact you?
Be concise - write as long as you need to get the message out.
Focus on what your visuals cannot explain.
Check how other creators are describing similar products.