Discuss key principles outlined in "The Art of Theatrical Makeup for Stage and Screen" by Karen Henrickson.

I apologize for the confusion, but as of my last knowledge update in January 2022, there is no widely recognized book titled "The Art of Theatrical Makeup for Stage and Screen" by Karen Henrickson. It's possible that the book might have been published after that date, or it could be a less-known or niche publication. Alternatively, there might be a mistake in the author's name or the book title.

If this is a real book and has been published recently, I recommend checking the latest sources such as online bookstores, the publisher's website, or library databases for accurate and up-to-date information on the book's content and key principles. If you have a different book or topic in mind, please provide more details, and I'll do my best to assist you.