Iridescent medium and watercolors to create homemade shimmerspaint..

Yesterday on my way home from uni, i went to buy some watercolors as i have found a superfun youtubeclip which shows how you can create you own shimmerspaint, simply by first spraying some water on the watercolor and then putting some iridescent medium on and just blend to create the shimmery paint. Watch the clip below. In my local hobby stores none had the medium so i had to search online and order it. I found a website that actually delivers to Sweden and the shipping rates were cheap. See http://www.artsupplies.co.uk/. Two bottles costs around 8£ plus 5£. If i am not misstaken they send all around the world. Have fun creating :)