his technique is called Negative Watercolor and can be found on splitcoaststampers.com
Any stamp set could be used.
Cut CS as follows:
Just Jade: 4-1/4" x 5-1/2"
Magenta Madness: 4" x 5-1/4"
Watercolor Paper: 3-3/4" x 5"
Will also need a spray water bottle.
With black ink, stamp overlapping flowers (or shapes) over entire surface.
With the wide brush paint water over the entire surface. (Lightly spritze the back to prevent warping.)
While the paper is still damp, use the wide brush to cover with diluted So Saffron ink (dip the brush in ink, add a drop of water to the lid and swirl it around to dilute color).
Now repeat with medium brush and the Magenta ink. Last use small brush and Just Jade ink.
Allow to dry. Add ribbon and tie a bow. Add sentiment. Adhere watercolor paper and sentiment with dimensionals.