To help you get started I created a free mini course with my favourite Service Design Principles and a list of 200 Service Design Principles, it's called the Service Design Principles Quickstart Guide.

I've also built a Notion Template that you can copy to create your own Service Design Principles Library.

This question was part of the third Service Design webinar. You can rewatch the full webinar for free with all the show notes and slides.

Check out all the questions about how to create and use Service Design Principles.