For these cards I used Photo paper and embossed the background with clear embossing powder. I then sprayed the paper with ink sprays made up of Stampin Up's ink refills and rubbing alcohol. I used Tempting Turquoise, old olive and daffodil delight. On the card below I used crystal effects to make water drops.
It's hard to tell from these pictures but the finally effect looks like a photo because I used photo paper. Do not make your ink sprays with water, water doesn't react well with photo paper.