Creative Coping Skills is directly geared towards teens or young adults and their caregivers, but can be helpful for readers of any age. It talks more generally about strategies for maintaining your physical, social, and emotional health. This source doesn't only focus on art but also yoga and self care. Therefore, this book could be used to expand your practice and try new activities that aren't discussed in the other sources in this guide.
Painting Calm is definitely the first stop for readers interested in connecting with nature and their emotions through watercolor painting. The author's instructions should be accessible even for complete beginners. She includes her own illustrations to help guide your inspiration. While working through this book, you might consider reaching out and finding your own style as well.
Soul Color could add some gentle structure to your watercolor practice with it's course format. Once again, the author (an artist with over 20 years of experience in watercolor painting) includes her own artwork for inspiration. As the book is meant to be a ten week course, you may feel that it goes too fast or too slow for you, so try to pace yourself. You may also want to check out the other sources to diversify your approach to creativity, as this book focuses exclusively on watercolor painting as an art medium.
Pen Mind, Beginner's Mind serves as an introduction to drawing mindfully. The author encourages readers to set aside their preconceived notions of drawing and accept his story with the clean slate of a beginner's mind. Working with your "beginner's mind" is a practice technique inspired by Zen Buddhism. As you read, you might ask yourself if this strategy can be applied to other areas of your life that you are trying to get better at or improve.
Drawing Your Own Path presents drawing as an alternative or supplement to "just sitting" meditation. The author's goal is to help you discover your own creativity that is already within you. The exercises in this book are simple, practical, and suitable for beginners. Simon includes his own art to help guide you: again, you may discover your own style or branch out to other sources to diversify your practice.