Process showing from nothing to cluttered.
This doesn't show my animation process, but the light animation is the same as how I draw water movement. Creates a "shimmering" look, though a flickering effect would have been more appropriate.
I had a lot of fun with this one, so here's a little show of my process.
I didn't know what to draw and started with a bunch of lines. From there I just kept adding lines and winged it. Some structures don't make sense because of this.