Phillip - Now when I look at the original image and the tutorial, I see that the shadow of the ripple is indeed on the other side. I guess this is due that I have the direction otherway around in the original, so that should be easily fixed for you.
The blue shading of the water is the same, but the plasma pattern is smaller in the original (or then it just looks bigger in the tutorial because I had to make the images smaller), resulting in dark blue colour appearing more.

-Paul