I used distress inks and water to add some shading and even though this isn't watercolor paper, it did FANTABULOUS with absolutely no warping. Of course, I didn't use much water either.
On the yellow card I embossed one of the scripty sentiments from Gina K Designs and on the pink card, I used a stencil and Hero Arts Ombre ink to sponge through the stencil - very subtle. I finished the cards off with sprinkles and sequins.