Claude Skills - Web Design/Visual Design?

I have been using Claude Sonnet for building CRUD apps, brochure websites, and content centric websites (content acquisition and presentation in same step) for going on two years now. It has come a very long way and I find myself using it more and more. Today I heard about Claude Skills, and how you can basically train skills for certain specialized things. Has anyone created a skills profile specific to web design or visual design? Something that could be like a rubric to check the brochure website Claude Sonnet just created for me for the obvious types of things a human web or visual designer would just instinctively know to check for?