This is watercoloring pushed up a notch. Stamp your image with versamark and emboss with white embossing powder, then watercolor. I also added Crystal Effects after it dried. Instead of the usual watercolor white paper, I used Soft Suede. SU's colored cardstock is sturdy enough to hold up to watercoloring, if you don't get too carried away with the water, and it gives it an added effect.
I hope you give this a try and thanks for stopping by!