Kate's classes are really lovely and this one was a beautiful way for me to warm up for my other painting projects. I often do drills with watercolour for a warm up, but rainbow blends were a vibrant and beautiful way to change things up.
I am not a beginner, but I still enjoyed exploring and injecting my own ideas into the exercises. Sometimes it's really refreshing to step outside our normal routines.
Here are four I created.

(I'm even using one of my project pieces as a cheery phone wallpaper now!)

And dry, without washi tape: