I loved watching Kay's watercolor video for PTI's Masters Challenges and had to try the technique out, too...
I used Leaf Prints and a sentiment from Harvest Berries.
I was worried about my color blending skills and that I might end up with browns! So I used all pink, red, orange, and yellow Distress Inks, with the exception of the sentiment that I stamped in waterproof StazOn before I started! At the end, I ran this through my Cuttlebug with the Canvas side of the Canvas/Linen Impression plate. It helped to flatten it, and gave it nice texture, too!