I used Photoshop to try and string an animation together:I like the water. I wonder how it animates?
Sorry, the window can be a bit distracting. I'll try removing it next time.
@momoka: Yes, I think, that tile you were making there is fundamentally wrong, although I actually quite dig the look of it :P hehe. Water is not so, umm, "formally" layed out, as you did with those lines. (although that can be a good way to start making water, if done properly) As Mogri said, it looks more like post-modern art or something, water is smooth, rounded, wild, and flowing (to throw out a few adjectives) - whereas some of your lines look rather stiff and "planned".
Otherwise, I think you were on the right track. Just try not to be too obsessive about staying around the design lines, it's another thing which makes it look too "formal". Believe it or not, my water started out with lines, but I built away from them - using them more as rough guides than solid outlines.