Awesome, glad you got it working and looking good. I agree, it is fun working with these blues, especially when creating abstract stuff.
You can do all sorts of things with that network. You can get the negative values of a sine curve to be always positive by adding an Abs(olute) Scaler after the Sin node, that will give you constant bumps. A bit like Perlin to Perlin Billows.
You can also Add to the 'X to Scaler' node another PF, distorting the position input, which will 'warp' the sine pattern in a similar way you've used the Warp shader for the above. I'd put a Multiply Scaler in after the PF to make the position distortion more than 1 meter if you did decide to try that.
Lady of the Lake.
It doesn't have to be complicated using blue nodes. You can simply mix two PFs just by putting them both into an Add Scaler node for example. Or get marble like patterns by swapping out the Add with a Difference Scaler. You don't need to know math to do that. Try a few simple things out. The node preview window inside each node, is useful to see how your pattern is changing through the network, and before you know it you've made a great texture.