My brother was staying at my house for 3 days, so we had to try it again. We started a little different this time. First thing was that we had to be inside, because it was snowing. So we had to use flash and as many lights as possible. Second, because we had to use flash we could make only one picture at the time. So we made only 250 photos and not 1100 as the last time. We did experiment with background color and color of the drops. Red drop didn’t give us the result we were looking for, but the green drop was just amazing. At the end we add some oil, so we get less waves.