Consider adding "Read This First" to the top of each pattern page as proposed in a comment on issue #3274.

I know that you have a disclaimer on the Practices page.
But not everyone checks the main page, especially when you have a link to a pattern and jump directly into it to save time.
Based on working experience with many stakeholders (business/client managers, product owners, designers, developers) I am sure it could benefit to have a disclaimer/reference to https://www.w3.org/WAI/ARIA/apg/practices/read-me-first/ at the top of each pattern :-)

Originally posted by @asedymova in #3274